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Review

Moderate Consumption of Beer and Its Effects on Cardiovascular and Metabolic Health: An Updated Review of Recent Scientific Evidence

by
Ascensión Marcos
1,*,
Lluís Serra-Majem
2,3,
Francisco Pérez-Jiménez
2,4,
Vicente Pascual
5,
Francisco José Tinahones
2,6 and
Ramón Estruch
2,7
1
Institute of Food Science, Technology and Nutrition (ICTAN), Spanish National Research Council (CSIC), 28040 Madrid, Spain
2
CIBER Physiopathology of Obesity and Nutrition, Carlos III Institute of Health, 28222 Madrid, Spain
3
Research Institute of Biomedical and Health Sciences, University of Las Palmas de Gran Canaria, 35016 Las Palmas, Spain
4
Lipid and Atherosclerosis Unit, Maimonides Biomedical Research Institute of Córdoba (IMIBIC), UGC of Internal Medicine, Reina Sofia University Hospital, University of Córdoba, 14004 Córdoba, Spain
5
Palleter Health Centre, CEU University—Cardenal Herrera, 12005 Castellón, Spain
6
Endocrinology, Nutrition, Diabetes and Obesity Unit, Institute of Biomedical Research in Málaga (IBIMA), Virgen de la Victoria Hospital, University of Málaga, 29010 Málaga, Spain
7
Department of Internal Medicine, Hospital Clinic, August Pi i Sunyer Biomedical Research Institute (IDIBAPS), University of Barcelona, 08036 Barcelona, Spain
*
Author to whom correspondence should be addressed.
Nutrients 2021, 13(3), 879; https://doi.org/10.3390/nu13030879
Submission received: 15 January 2021 / Revised: 1 March 2021 / Accepted: 3 March 2021 / Published: 9 March 2021
Browse Figure
Review Reports Versions Notes

Abstract

:
There is growing interest in the potential health-related effects of moderate alcohol consumption and, specifically, of beer. This review provides an assessment of beer-associated effects on cardiovascular and metabolic risk factors to identify a consumption level that can be considered “moderate”. We identified all prospective clinical studies and systematic reviews that evaluated the health effects of beer published between January 2007 and April 2020. Five of six selected studies found a protective effect of moderate alcohol drinking on cardiovascular disease (beer up to 385 g/week) vs. abstainers or occasional drinkers. Four out of five papers showed an association between moderate alcohol consumption (beer intake of 84 g alcohol/week) and decreased mortality risk. We concluded that moderate beer consumption of up to 16 g alcohol/day (1 drink/day) for women and 28 g/day (1–2 drinks/day) for men is associated with decreased incidence of cardiovascular disease and overall mortality, among other metabolic health benefits.

Graphical Abstract

1. Introduction

In recent years, there has been an increasing interest in the potential health-related effects of moderate alcohol consumption. Although the harmful effects of excessive alcohol use are well established, the association of low-to-moderate alcohol consumption with health-related benefits is still controversial, since the results of available studies are not homogeneous and reaching clear conclusions is challenging. This lack of consensus is observed in alcohol consumption guidelines published in the last five years, which use different terminology (“risky drinking”, “moderate consumption”, or “low-risk drinking”) as well as different drinking thresholds [1,2,3,4,5,6] (Table 1). Furthermore, other variables, such as differences in concentrations of non-alcoholic components (i.e., polyphenols), may confound the beneficial effects of specific alcoholic drinks [7,8].
Beer is an alcoholic beverage frequently consumed in Europe. In 2018, the average yearly beer consumption in Europe was 72 L per capita, with a few countries (Czech Republic, Austria, and Germany) consuming more than 100 L per capita per year [9]. However, patterns of consumption differ across the region varying from predominantly meal-associated drinking in Mediterranean countries, to high rates of heavy episodic drinking in Central and Eastern Europe, and relatively frequent consumption both with and outside of meals in Central Western Europe [10].
Beer is mainly composed of water, but it is also rich in nutrients—carbohydrates, amino acids, minerals, vitamins, and polyphenols—resulting from a multi-step brewing and fermentation process [7,11,12,13]. Hop flowers, used as a bittering and flavoring agent [14], contain phenolic compounds, including prenylated flavonoids [15,16], which have been shown in vitro to have different antioxidant, anticarcinogenic, anti-inflammatory, oestrogenic, and antiviral biological activities [7,17]. Xanthohumol is the most abundant of these compounds and, in addition to potential bioactivity [7,18], it also inhibits platelet activation without increasing the bleeding risk [19]. Thus, brewing processes have been optimized to achieve the highest possible content of xanthohumol [20]. Regarding antioxidant content, ale beers have been reported to display a higher antioxidant activity than lager beers due to the higher fermentation temperature in the brewing process. However, despite these enrichment processes, controversy remains as to the bioavailability of the phenolic compounds in beer [21,22,23].
Alcohol content in regular beers varies between 3% and 6% alcohol by volume [11]. There is vast scientific literature on excessive alcohol consumption. Indeed, chronically high alcohol intake acts as a toxin to the heart and vascular system and may also exacerbate pre-existing heart disorders. However, low-to-moderate amounts of alcohol intake might have beneficial effects on the cardiovascular (CV) system, since it increases high-density lipoprotein cholesterol (HDL) and reduces arterial stiffness (both effects shown specifically with beer) [21,22,24,25], and also decreases fibrinogen, platelet activation and aggregation, as well as blood oxidative stress and inflammatory parameters [26,27,28]. The alcohol content of beer might also have an effect on glucose homeostasis [29]. Alcohol contributes to total calorie intake and may increase weight when consumed in excess [30,31]. Non-alcoholic components also contribute to the energy content of beer. Thus, Public Health England lists the mean energy content of alcohol-free beers at seven kilocalories/100 g [32]. Overall, 28% of the total monthly kilocalories contributed by beer among regular drinkers derive from its non-alcoholic ingredients [33].
Taken together, the biological activity of phenolic compounds in beer and the possible association of alcohol intake with mortality, CV risk [34,35,36], and glucose metabolism [37,38,39,40,41,42,43] may contribute to the putative health-related effects of moderate beer consumption. Conversely, excess beer consumption may be associated with weight increase and associated morbidities [30].
We conducted an analysis of all reviews, meta-analyses, and longitudinal, prospective, cohort studies published from January 2007 to April 2020 regarding beer consumption and its relationship with CVD and mortality risk, with the objective of evaluating the average intake of beer that could be considered “moderate” based on the reported consumption. Furthermore, we aimed to identify several differences shown in specific population subgroups in the selected studies.

2. Materials and Methods

In April 2020, a literature search of papers published after January 2007 was conducted using PubMed EMBASE, and through reference list cross-checking of previous meta-analyses, prospective clinical studies, and systematic reviews in humans, evaluating beer effects on health. The search strategy retrieved citations from databases containing the subject heading “beer” in combination with “health”, “cardiovascular”, “mortality”, “obesity”, “diabetes”, “young”, “women”, or “alcoholism”. The search terms were adapted for use with both bibliographic databases (Table 2).
Original eligible papers, based on their title/abstract, were obtained and reviewed to select those meeting the inclusion criteria: clinical studies in humans with prospective cohort design, plus systematic reviews and meta-analyses evaluating beer effects on health since 2007, and publications that authors considered could provide additional information on the subject. A total of 13 reviews (narrative or systematic reviews and/or meta-analysis), 9 prospective cohort studies, and 1 open-label, randomized, cross-over study were selected (Table 3).

3. Results

A summary of related studies is shown in Table 4. Two reviews referring specifically to beer, reported that moderate consumption (up to 55 g alcohol/day; i.e., 385 g/week) showed a beneficial effect on non-fatal CV events [34,57]. Both reviews found that the highest effect was associated with moderate beer or wine consumption, suggesting that the polyphenolic content of these beverages probably contributes to the observed CV benefits [34,57].
These data are in agreement with most findings from reviews/meta-analyses and cohort studies, which report a protective effect of moderate alcohol drinking for CVD compared to abstention, former drinking, or occasional drinking [22,34,47,49,56,57,60]. Only the review by Toma et al. does not support these conclusions; the authors suggest that this protective effect may be a confounder due to the inclusion of former drinkers in the non-drinkers group [48]. However, the prospective cohort study by Bell et al., conducted in almost 2 million people, took these potential confounders into consideration, and also found a positive effect of moderate drinking (112 g/week in women and 168 g/week in men) on CV risk [49]. Costanzo et al. found a negative (although not significant) association between spirits and vascular events, suggesting alcohol content, and not solely polyphenols, may also play a role in cardiovascular events [57]. Moreover, as Roerecke et al. [54] noted that distinctions between former drinkers and lifetime abstainers might not be sufficient for an accurate analysis, based on the heterogeneity of reasons underlying non-drinkers’ decision not to drink, which might further confound the results. Finally, drinking patterns may also play a key role in outcomes [54], since self-reported weekly intakes might include alcohol consumed during the weekend during a binge, which would be associated with worse CV results.

Gender Differences

Due to the paucity of separate data for men and women, none of the beer-specific CVD studies stratified their conclusions by gender. The meta-analysis by Roerecke et al. [54] noted that women are more sensitive to the protective effect of moderate alcohol consumption, based on a previous meta-analysis [56], which showed a steeper J-curve for ischemic heart disease (IHD), mortality and morbidity in women than in men. The detrimental effect on CV risk of binge drinking seems to be lower in women than in men [49,60], and an increased risk of heart failure has been observed in abstemious women compared with moderate drinkers [49]. In addition, Snow et al. [60] observed that the beneficial effects of low and/or moderate usual consumption on CV risk were only evident in younger women (aged 18–34), whereas cardio-protection became evident at middle (aged 35–49) or older age (aged 50–64) in men. Overall, these gender differences may be due to hormonal changes over the life course or to a lower lifetime consumption of total alcohol.

4. Moderate Beer Consumption and Mortality

A summary of related studies is shown in Table 5. The systematic review by de Gaetano et al. [34] suggested that a J-shaped relationship also exists between beer consumption and all-cause mortality. The lowest mortality risk was observed in subjects with low to moderate alcohol consumption compared to abstainers or heavy drinkers, with the lowest risk at beer consumption of 84 g alcohol/week [34].
Studies on general alcohol consumption have similar conclusions. A prospective cohort study by Suadicani et al. found an association between wine consumption and all-cause mortality, with a consistent effect at 84 g alcohol/week, and a larger effect seen with higher consumption in men with non-O blood type [34,61]. However, a meta-analysis by Stockwell et al. [53] suggested that, when the necessary adjustments for study design characteristics are implemented, no association of moderate alcohol consumption with mortality is observed. Two later prospective studies, with well-adjusted variables, confirmed the association between lower risk of total and CV mortality [49,51] and moderate alcohol consumption defined by 168 g/week, 24 g/day for men and 112 g/week, 16 g/day for women in the Bell et al. study [49] or by 43–196 g/week for men and 43–98 g/week for women in the Xi et al. study [51].

Gender Differences

In the EPIC study, beer consumption in women was more strongly related than wine consumption to overall mortality for amounts >21 g/week compared with the reference category (0.7–20.3 g/week) [69]. On the other hand, in the study by Xi et al., the protective effect of low and moderate alcohol consumption against all-cause and CV disease (CVD) mortality was more pronounced in women [51]. Thus, it seems that women may be both more sensitive to the protective effects against mortality of moderate beer intake and to the risk effects of higher amounts.

5. Moderate Beer Consumption and Obesity, Diabetes, and Osteoporosis

Table 6 details the studies on this subject. Although beer seems to have a direct effect on weight gain [52], and on waist circumference in men [59], there is not enough evidence to confirm whether moderate intake (<500 mL/day) is associated with general or abdominal obesity [55], although daily amounts ≥500 mL increase the risk of not losing weight [59]. In this regard, Padro et al., have reported that the moderate consumption of either alcoholic (30 g/day for men; 15 g/day for women) or non-alcoholic beer for four weeks did not increase the body weight of obese individuals [46]. Furthermore, moderate beer consumption was associated with increases in the anti-oxidative properties of high-density lipoprotein, which facilitate the efflux of cholesterol [46].
Based on the reviewed diabetes studies [43,50], moderate alcohol consumption may decrease diabetes risk in men. A meta-analysis of 13 prospective studies, with 397,296 participants, showed that wine consumption was associated with a significant reduction of the risk for type 2 diabetes mellitus (T2DM), with a pooled relative risk of 0.85, whereas beer or spirits consumption led to a slight trend towards a decreasing risk for T2DM (relative risk 0.96 and 0.95, respectively) [70]. Chronic alcohol consumption, however, is considered a risk factor for T2DM, which may be triggered by a deterioration in glucose tolerance, alterations in signalling of peptides involved in appetite regulation, and dysfunction and apoptosis of pancreatic β-cells [71,72].
Data on bone mineral density (BMD) and fracture risk have been less conclusive, probably due to the few studies available, and both relatively high and low levels of alcohol consumption have shown benefits for bone health. Thus, the consumption of both beer and wine at doses up to 60 g/day in men alone in the study by Yin et al. [58], and up to 13 drinks/week (182 g/week) in the study by Mukamal et al. [62], were shown to increase BMD and/or decrease risk of fracture in the elderly. Even very low levels of consumption were associated with a decreased fracture risk. Considering beer specifically, consumption of <1 beer/week (<14 g/week) in men and women was significantly associated with a lower risk of hip fracture (HR 0.66, 95%CI 0.44–0.99) [62]. Notably, low-alcohol beer consumption in women was associated with increased lumbar BMD [58], suggesting that, beyond the putative positive effect of alcohol on BMD, the non-alcoholic components of beer may also be involved. Other compounds present in beer (e.g., phytoestrogens such as 8-prenylnaringenin) act synergically with silicon to stimulate osteoblast cells, improve bone structure, and help remineralize bone and teeth [44]. The polyphenolic fraction, flavonoids, and the silicon content in beer may contribute to the positive effects on bone metabolism [45]. The protective effect of polyphenols has also been proven in human studies, where they reduced systolic and diastolic pressure and reduced lipoprotein cholesterol serum levels, among others [73]. The cardioprotective role of polyphenols in beer (traditional or alcohol-free) in particular has been reported in individuals with high cardiovascular risk [8,74].

Gender Differences

With regard to obesity, the study by Schütze et al. [59] suggested that only men observe a risk for an increase in waist circumference (WC) with beer consumption of >500 mL/day. In women, beer-abstainers showed lower relative odds for WC gain compared with their very low-level drinking counterparts (1 to <125 mL/day), which was close to significance.
Similar gender differences were seen in the diabetes studies. Cullman et al. found that alcohol effect on glucose metabolism was different between men and women [43], depending on amounts of consumption and alcohol type; overall, in individuals with normal glucose tolerance, a decrease in T2DM risk was observed in occasional consumers of beer and wine vs abstainers among men, and in high consumers (≥192 g/week) of wine vs occasional consumers among women. This cohort study showed that men who were high consumers of beer and had baseline normal glucose tolerance had a significantly increased risk of developing abnormal glucose regulation (OR 1.63, CI 1.07–2.48 for pre-diabetes plus T2DM and OR 1.84, CI 1.13–3.01 for pre-diabetes) compared to occasional drinkers [43]. Men abstainers had a significantly higher risk of developing abnormal glucose regulation (OR 2.13, CI 1.03–4.39) than occasional beer drinkers, suggesting occasional beer consumption may be protective in men. Data for beer consumption in women were not provided in the Cullman et al. study. When considering individuals with normal glucose tolerance or pre-diabetes at baseline, the only significant difference found when using occasional drinking as a reference was the case of women with low consumption of total alcohol, who showed a decreased risk of T2DM (OR 0.41, CI 0.22–0.79). Most studies reviewed by Polsky et al. [50] also showed differences between men and women. In one study, a lower risk for T2DM was only observed in women who consumed alcohol (any quantity; no dose-relationship observed) compared to lifetime abstainers, but this was not found in men [75]. Another study showed that in men alone, a moderate alcohol consumption (10–14.9 g/day) was associated with a reduced risk of T2DM with respect to very low consumption (0.01–4.9 g/day), linked to wine consumption [76].
Regarding BMD, the study by Yin et al. [58] found that alcohol intake was positively associated only in men with an increase in the percentage of spinal and hip BMD after two years, whereas in women, lumbar spine BMD at baseline was positively associated with frequency of low-alcohol beer consumption (beta = 0.034 g/cm2 per category, p = 0.002).

6. Discussion

Despite the paucity of studies specifically exploring beer-related health effects, available data suggest that moderate beer consumption is associated with a decreased risk for non-fatal CV events and total mortality. For other health effects, such as those on general or abdominal obesity, study data have generally been inconclusive, although a recent small study suggests that moderate consumption of either alcoholic or non-alcoholic beer does not increase body weight in obese individuals [46]. Furthermore, moderate beer consumption has been associated with decreased diabetes risk (only in men), and with an increase in BMD, which lowers the risk of fracture in the elderly.
Although the available evidence supports the health benefits of moderate beer consumption in adults (aged ≥ 18 years), study heterogeneity makes it difficult to establish the precise quantity of beer needed to obtain these benefits. Different units of measurement (i.e., grams of alcohol or non-standardized drinks per day vs. standard drink units), and different definitions of consumption levels limit the direct comparison of these studies. Nevertheless, given the ranges of alcohol consumption associated with observed benefits in CVD (40–252 g/week for men; 21–210 g/week for women), mortality (75–196 g/week for men; 75–112 g/week for women), and diabetes, obesity, and osteoporosis (12–350 g/week for men; 12–210 g/week for women), a conservative upper limit of moderate beer drinking in men could be ≤196 g/week (approximately 1–2 beers per day). Available studies suggest that women may present a higher sensitivity to beer effects and, therefore, their upper limit of moderate consumption may be slightly lower at ≤112 g/week (approximately 1 beer per day). Notably, these values are similar to the low-risk drinking guidelines established by many countries (Table 1) [1,2,3,4,5,6]. Importantly, evaluating the overall effect of alcohol consumption on health is challenging, given it can be linked to improved benefits in CVD, as shown in this study, but it can also be associated with an increased risk of cancer [77]. Notably, moderate alcohol consumption varies between reports, and large-scale studies are warranted to adequately evaluate the role that specific ranges of alcohol consumption play in health.
Aside from gender differences, alcohol-associated health benefits might be modulated by intrinsic characteristics of populations, including their socioeconomic status [68] and/or diet and general lifestyle. In a well-established example, the Mediterranean diet—historically associated with high life expectancy and low CVD rates—is characterized by its high consumption of fresh foods, low consumption of animal fats, and low-to-moderate consumption of wine, generally with meals [78]. Indeed, the food pyramid recommended by the Spanish Society of Community Nutrition reflects the Mediterranean diet and includes fermented alcoholic beverages (wine, beer, and cider) among foods and drinks advised for an optional, occasional, and moderate consumption [3]. Importantly, this inclusion of alcoholic beverages in the food pyramid regards its consumption with meals, not alone. The inclusion of optional alcohol in the food pyramid is in agreement with data that shows that daily moderate beer consumption in the context of a Mediterranean diet is associated with favourable changes in the blood lipid profile [24].
The moderate consumption of alcohol ≤196 g/week (≤28 g/day or 1–2 beers daily) or ≤112 g/week (≤16 g/day or 1 beer daily) for men and women, respectively, has been associated with a variety of health benefits. However, it must be noted that weekly recommended amounts of alcohol should be spread across several days and not include episodes of heavy alcohol use or “binge drinking”, as irregular heavy drinking is associated with a higher risk of ischemic heart disease [79]. This episodic heavy drinking is defined by the World Health Organization as consumption of ≥60 g (approximately ≥6 drinks) per occasion [80] and by the United States National Institute on Alcohol Abuse and Alcoholism [81] as consumption of ≥5 drinks (male) or ≥4 drinks (female) in less than 2 h. While moderate regular drinking is associated with a lower risk of ischemic heart disease compared with abstention [54,82], excessive or binge drinking not only increases the risk of CV events, but also the risk of all-cause mortality [51,83]. Therefore, consumption of moderate amounts of alcohol should be always considered in the context of the Mediterranean lifestyle (moderate quantities of alcohol consumed as part of a meal), as a strategy to promote a more socially responsible consumption, avoiding excessive alcohol intake, often associated with Nordic European, as well as Central and Eastern Europeans and Anglo-Saxon alcohol consumers [10,84]. In a recent study using data from 123,219 men and women who were followed up to 34 years of age, the authors reported that the adherence of the participants to five low-risk lifestyle-related factors (never smoking, normal weight, regular physical activity, healthy diet, and moderate alcohol consumption) could prolong life expectancy at age 50 years by 14.0 and 12.2 years for female and male US adults, respectively, compared with individuals who adopted no low-risk lifestyle factors [85].
In developing this review, we considered the possibility that study sponsors might bias published results. Reported funding sources and conflict of interests (COIs) were assessed for every study selected for this review. Out of the selected studies, only three were directly funded by alcohol-related foundations [34,55,57], and COIs were reported by some of their authors. In addition, the sponsors of these three studies declared no intervention in the study execution and writing, and no differences in study results were observed regardless of funding source.
In conclusion, we consider that an approximate intake of 10–16 g alcohol/day (1 beer/day) for women and 20–28 g alcohol/day (1–2 beers/day) for men could be defined as moderate beer drinking, providing that the consumption is distributed throughout the week with no heavy episodic or “binge drinking” on a single occasion, especially during weekends. Moderate beer drinking decreases CV risk and overall mortality. In addition, moderate consumption decreases diabetes risk in men, increases BMD, lowering the risk of fracture in the elderly, and does not seem to be associated with general or abdominal obesity. Furthermore, moderate beer drinking should be considered within the context of mealtime consumption, as the custom in Mediterranean countries. Future studies should refine the quantity of beer considered as low-to-moderate consumption, which is the lowest risk level, and further determine the possible health benefits associated with moderate beer drinking.
Although research in this field is acquiring great interest and possible benefits are being found, the authors of this article insist on not recommending the consumption of alcohol in children, adolescents, pregnant women, adults under medication, or at work when using machinery (or driving). In addition, the consumption of alcohol must be always accompanied by meals and excess must be avoided.

Author Contributions

Conceptualization, methodology and writing—review: A.M., L.S.-M., F.P.-J., V.P., F.J.T. and R.E. All authors have read and agreed to the published version of the manuscript.

Funding

This study was partially supported by the “Centro de Información Cerveza y Salud”. The funding organization has not had any role in the data collection, their analysis and interpretation, nor in the right to approve or disapprove publication of the finished manuscript.

Institutional Review Board Statement

Not applicable.

Informed Consent Statement

Not applicable.

Data Availability Statement

No new data were created or analyzed in this study. Data sharing is not applicable to this article.

Acknowledgments

We thank Almudena Pardo-Mateos who provided professional writing services.

Conflicts of Interest

R.E. reports grants from Spanish Institute of Health “Carlos III” (Spain), Cerveza y Salud (Spain), Fundación Dieta Mediterranea (Spain), and grants from Bicentury SA (Spain), Grand Fountaine (Spain), Novartis SA (Spain), and Uriach Laboratories (Spain). He is also a member of the Cerveza y Salud Scientific Committee. Further, personal fees for given lectures from Brewers of Europe (Belgium), Fundacion Cerveza y Salud (Spain), Pernaud-Ricard (Mexico), Instituto Cervantes (Alburquerque, USA), Instituto Cervantes (Milan, Italy), Instituto Cervantes (Tokyo, Japan), Lilly Laboratories (Spain), Prodeca—Generalitat de Catalunya (Spain), Wine and Culinary International, International Forum (Spain), and non-financial support from Harvard School of Public Health (Boston, USA), Columbia University (NYC, USA), ERAB (Belgium), Fundació Clinic (Spain), and Fundació Bosch i Gimpera (Spain). A.M. reports having received research funding from the Cerveza y Salud Information Centre, the Spanish arm of European Brewers Association, and being a member of the Cerveza y Salud Scientific Committee. F.J.T. reports having received speaker’s bureau and consultant/advisory board fees from Cerveza y Salud, AstraZeneca, Amgen, Boehringer Ingelheim, Bristol-Myers Squibb, Eli Lilly and Company, GlaxoSmithKline, Janssen Pharmaceuticals, Merck Sharpe & Dohme, Novartis Pharmaceuticals Co., Novo Nordisk, Sanofi, and Regeneron Pharmaceuticals, L.S.-M., V.P., F.J.P.-J. declare not to have competing interests.

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Table
Table 1. Low-risk drinking guidelines.
Table 1. Low-risk drinking guidelines.
Country. Year
Guidelines		1 SDU = g Pure AlcoholTermDaily a,b (g Alcohol) Weekly a,b (g Alcohol)
Spain. 2016
Socidrogalcohol consensus on alcohol in Primary Care [2]		1 SDU = 10 g
Wine: 1 glass
Beer: 1 beer (≈200 mL)
Spirits: 25 g		Risky consumption (starting at)Women: 20 g
Men: 40–60 g		Women: 140 g
Men: 280 g
Spain. 2019
Update Dietary Guidelines for the Spanish population [3]		1 SDU = 10 gModerate consumption (upper limit)Women: <20 g
Men: <40 g		-
-
UK. 2016
UK Chief Medical Officers’ Low Risk Drinking Guidelines [4]		1 SDU = 8 g
Wine: 1 glass (125 mL) (11% ABV)		Low-risk drinking (upper limit)-
-		Women: 112 g
Men: 112 g
USA. 2015
Dietary guidelines [5]		1 SDU = 14 g
Wine: 5 fl oz or 147.9 mL (12% ABV)
Beer: 12 fl oz or 354.9 mL (5% ABV)
Spirits: 1.5 fl oz or 44.4 mL (40% ABV)		Moderate drinking (upper limit)Women: 14 g
Men: 28 g		-
-
Canada. 2018
Canada low-risk alcohol drinking guidelines [6]		1 SDU c ≈ 13 g
Wine: 142 mL (12% ABV)
Beer: 341 mL (5% ABV)
Spirits: 43 mL (40% ABV)		Recommended limit-
-		Women: 130 g
Men: 210 g
37 countries. 2016 [1]1 SDU = 8–20 gLow-risk drinking (upper limits range)Women: 10–42 g
Men: 10–56 g		Women: 98–140 g
Men: 150–280 g
ABV: Alcohol by volume; SDU: Standard drinking unit. a When amounts were expressed in number of SDUs, they were converted to grams. b Daily and weekly values are listed as published in respective guidelines. Weekly values may not reflect a week’s worth (7 days) of daily allowance. c 13 g is inferred from the different beverages considered as 1 SDU.
Table
Table 2. Literature search terms.
Table 2. Literature search terms.
Data BaseSearch SyntaxNo. Articles
PubMed((Beer[MeSH Major Topic]) and (“2007”[Date—Publication]: “2020/04/01”[Date—Publication])) and (health or mortality or cardiovascular or diabetes or obesity or women or men or gender or young or adolescent or age or alcoholism)82
Filtered by:
Clinical study
Comparative study
Multicenter study
Observational study
Randomized controlled trial
Systematic reviews
EMBASE‘beer’/de and ‘beer’:ab,ti and ((‘health’/de or ‘mortality’/de or ‘cardiovascular’/de or ‘diabetes’/de or ‘obesity’/de or ‘female’/de or ‘male’/de or ‘sex’/de) and difference or ‘adolescent’/de or ‘young adult’/de or ‘alcoholism’/de) and ((article)/lim or (review)/lim) and ((adolescent)/lim or (young adult)/lim or (adult)/lim or (middle aged)/lim or (aged)/lim or (very elderly)/lim) and (humans)/lim and (clinical study)/lim and (2007–2017)/py210
Table
Table 3. Papers selected for review.
Table 3. Papers selected for review.
Alcohol/Beer PaperStudy TypeRelated Subject
Osorio-Paz et al. 2019 [44]ReviewCV
Sacanella et al. Nutr Hosp. 2019 [22]ReviewCV
Humia et al. Molecules 2019 [21]ReviewCV
Redondo et al. Nutr Hosp 2018 [45]ReviewCV and osteoporosis
Padro et al. Nutrients 2018 [46]Prospective randomized cross-overObesity (metabolic syndrome)
Wood et al. Lancet. 2018 [47]System. Review/MetaCV and Mortality
Toma et al. Curr Atheroscler Rep. 2017 [48]ReviewCV
Bell et al. BMJ 2017 [49]Prospective cohortCV
Polsky et al. Curr Diab Rep. 2017 [50]System. ReviewDiabetes
Xi et al. J Am Coll Cardiol. 2017 [51]Prospective population-based cohortMortality
de Gaetano et al. Nutr Metab Cardiovasc Dis. 2016 [34]ReviewCV and Mortality
Fresán et al. Nutrients. 2016 [52]Prospective cohortObesity
Stockwell et al. J. Stud. Alcohol Drugs. 2016 [53]System. Review/MetaMortality
Roerecke et al. BMC Med. 2014 [54]System. Review/MetaCV
Bendsen et al. Nutr Rev. 2013 [55]System. Review/MetaObesity
Cullmann et al. Diabetic Medicine. 2012 [43]Prospective cohortDiabetes
Roerecke et al. Addiction. 2012 [56]System. Review/MetaCV
Costanzo S, et al. Eur J Epidemiol. 2011 [57]System. Review/MetaCV
Yin et al. Eur J Clin Nutr. 2011 [58]Prospective cohortOsteoporosis
Schütze et al. Eur J Clin Nutr 2009 [59]Prospective cohortObesity
Snow et al. Age and Ageing. 2009 [60]Prospective cohortCV and Mortality
Suadicani et al. Alcohol. 2008 [61]Prospective cohortMortality
Mukamal et al. Osteoporos Int. 2007 [62]Prospective population-based cohortOsteoporosis
CV. Cardiovascular.
Table
Table 4. Summary of the main cardiovascular (CV) studies.
Table 4. Summary of the main cardiovascular (CV) studies.
Study
Funding/COI a		Design (Mean/Median Years of Follow-Up)nCategories of Consumption/Type of DrinkVariablesReference Group (HR = 1) Outcomes/Conclusions b
Costanzo et al., 2011 [57]
Cervisia Consulenze and
Istituto Nazionale per la Comunicazione.		Systematic review-meta-analysis12 prospective studies (n ranged from 1373 to 87,536) and 6 case-control studies (n ranged from 616 to 1746)Wine, beer, and spiritsFatal non-fatal CHD, CHD, CVD, AMI, stroke, CHD mortality, IHD mortality, CVD mortality AND/OR total mortality. 13 studies: J-shaped relationship for beer and CV risk.
16 studies: J-shaped relationship between wine intake and CV risk. 12 studies reporting separate data on wine or beer consumption: two closely overlapping dose-response curves.
Roerecke et al., 2012 [56]
Global Burden of Disease Study and
by the grant “Drinking Patterns & Ethnicity: Impact on Mortality Risks”, NIAAA		Systematic review-meta-analysis44 observational studies including 957,684 participantsLifetime abstainer. Occasional: 2.5–11.99 g/week; 12–23.99 g/week; 24–35.99 g/week
/
Alcohol in general		IHDLifetime abstainersCardioprotection was observed in all strata, and substantial heterogeneity was noted across studies. Wide confidence intervals observed particularly for average consumption of 1–2 drinks per day.
Roerecke et al., 2014 [54]
The European Community’s Seventh Framework Programme—Addictions and Lifestyle in Contemporary
Europe—Reframing Addictions Project.		Systematic review and meta-analysis7 studies for the meta-analysisFor the meta-analysis: Current drinkers with an average alcohol consumption <30 g/day of pure alcohol with or without HED
/
Alcohol in general		IHDLifetime abstainersBeneficial effect of low alcohol consumption without HED episodes as compared to life-time abstainers
Wood et al., 2018 [47]
Various government, private, and pharmaceutical sources. / None declared.		Systematic review and meta-analysis83 prospective studies including 599,912 participantsCurrent drinkers
/
Alcohol in general, also separate analyses for wine, beer, and spirits		Mortality, stroke, CHD, AMI, heart failure, fatal hypertensive disease, fatal aortic aneurysm Lowest baseline alcohol consumption category (0–25 g/week)Threshold for lowest risk of all-cause mortality was ~100 g/week. Association between alcohol consumption and total CVD risk showed higher HR for beer and spirits than for wine.
de Gaetano et al., 2016 [34]
Assobirra, the
Italian Association of the Beer and Malt Industries/Some authors were consultants for the Web Newsletter
of Assobirra, or were
on the board/received lecture fees from FIVIN, the Beer and
Health Foundation, ERAB, or Cerveceros
de España.		Systematic review7 prospective studies (n ranged from 1373 to 87,526) and 4 case-control studies (n ranged from 937 to 1514)Wine, beer, and spiritsFatal non-fatal CHD, AMI, CHD, CHD mortality, AND/OR CVD mortality. Some benefit of beer against CVD
Toma et al., 2017 [48]/
None declared		Review1 case-control study (INTERSTROKE [63]; n = 26,919) and 1 prospective study (PURE; [64] n = 114,970)INTERSTROKE: low-moderate alcohol use: ≤14 drinks/w in women and ≤21 drinks/w in men.
/
Alcohol in general		INTERSTROKE: any stroke, ischemic stroke, and hemorrhagic stroke
PURE: mortality, CVD, myocardial infarction, stroke, and a composite of all outcomes, which also included alcohol-related cancers and injury. 		INTERSTROKE: Non-drinkers or former drinkers.
PURE: Non-drinkers		INTERSTROKE:
Low-moderate alcohol use was associated with stroke (OR: 1.14; 95%CI 1.01–1.28), ischemic stroke (OR: 1.07; 0.93–1.23) and hemorrhagic stroke (OR: 1.43; 1.17–1.74).
PURE: Current drinking was associated with reduced myocardial infarction (HR: 0.76; 95% CI 0.63–0.93). In addition, it was associated with a reduced composite outcome in high-income and upper-middle-income countries (HR 0.84 (0.77–0.92)), but not in lower-middle-income and low-income countries (HR 1.07 (0.95–1.21); p-interaction < 0.0001).
Bell et al., 2017 [49]
National Institute for Health Research,
Welcome Trust, the Medical Research Council prognosis research strategy
Partnership and other government health-related agencies. / None declared		Prospective cohort
(6 y)		1,937,360 (51% women)Non-drinkers. Former drinkers. Occasional drinkers: drinks rarely or occasionally. Moderate: Men: 21 SDU/week or 3 SDU/day. Women: 14 SDU/w or 2 SDU/da. Heavy drinkers
/
Alcohol in general		12 common symptomatic manifestations of CVD.
Aggregated CVD (all CV endpoints other than stable angina).		Moderate drinkers Non-drinking: unstable angina (HR 1.33, 95% CI 1.21 to 1.45), myocardial infarction (1.32, 1.24 to1.41), unheralded coronary death (1.56, 1.38 to 1.76), heart failure (1.24, 1.11 to 1.38), ischemic stroke (1.12, 1.01 to 1.24), peripheral arterial disease (1.22, 1.13 to 1.32), and abdominal aortic aneurysm (1.32, 1.17 to 1.49). Heavy drinking: unheralded coronary death (HR 1.21, 95%CI 1.08 to 1.35), heart failure (1.22, 1.08 to 1.37), cardiac arrest/sudden coronary death (1.50, 1.26 to 1.77), transient ischemic attack (1.11, 1.02 to 1.21), ischemic stroke (1.33, 1.09 to 1.63), intra-cerebral hemorrhage (1.37, 1.16 to 1.62), peripheral arterial disease (1.35, 1.23 to 1.48); myocardial infarction (0.88, 0.79 to 1.00) and stable angina (0.93, 0.86 to 1.00).
Snow et al., 2009 [60]
None declared		Prospective cohort
(10 y)		1154 (574 women)1 SDU: 13 g ethanol. Men: Light: 0.65–5.77 g/day; Moderate: 5.78–18.1 g/day; Heavy: >18.1 g/day. HED: ≥8 drinks/episode in past year
Women: Light: 0.65–2.92 g/day; Moderate: 2.93–9.15 g/day; Heavy: >9.15 g/day. HED: frequency of ≥8 drinks/episode
/
Alcohol in general		CHD events; hypertension; Other CVDLifetime abstainers and occasional drinkers who consumed <0.05 drinks (<0.65 g) per day. Men for CHD events: Heavy: HR: 0.28 (0.08–0.93) p = 0.037 in old men; HED: 4.13 (1.46−11.62) p = 0.0073 in middle-aged men. Men for hypertension: HED: HR 1.62 (0.99–2.63), p = 0.054 in old men.
Men for other CVD: Light: HR 0.54 (0.28−1.04), p = 0.066 in old men; Heavy: HR 0.40 (0.19−0.85, p = 0.017 in old men. Women for hypertension: Light: HR 0.26 (0.07–1.01), p = 0.052 in young women. Women for other CVD: Light: HR 0.23 (0.08−0.65), p = 0.0057 and Moderate: HR 0.14 (0.05−0.45), p = 0.0009 in young women.
AMI: Acute myocardial infarction; COI: Conflict of interest; CV. Cardiovascular; CVD: Cardiovascular disease; CHD: Coronary heart disease; ERAB: European Foundation for Alcohol Research; FIVIN: the Foundation for Wine and Nutrition Research; HED: Heavy Episodic Drinking; HR: Hazard Ratio; IHD: Ischemic heart disease; OR: Odds Ratio; SDU: Standard drinking unit. a When funding is provided by industries and/or foundations that might represent a conflict of interest, it is written in bold. b Outcomes for prospective studies and meta-analyses, and Conclusions for reviews. Adjustments: Costanzo et al., 2011: All by age and 15 of the 18 studies, in addition, by one or more of the following: sex, race, education, marital status, country of birth, smoking, total alcohol intake, exercise intensity, depression score, frequent aspirin use, cholesterol, BMI, diabetes, hyper-lipidemia, cancer, physical activity, cohabitation, coffee, consumption of other beverage types, total daily energy and saturated fat intake, intake of vegetables, fruit, fish, saturated and trans fatty acids, socioeconomic status, history of heart dis-ease, AMI, hypertension, etc. Roerecke et al., 2012: Where needed, the effect sizes of reference categories were re-calculated to reflect abstainers as the reference category. Former drinkers were excluded from all analyses. Those consuming > 72 g/day were excluded from all analyses because of scarcity of data. Roerecke et al., 2014: All studies were adjusted for age and smoking status, five for education and other indicators for socio-economic status, and four each for BMI and marital status. Wood et al, 2018: Age, smoking status, history of diabetes. de Gaetano et al., 2016: All by age and 8 of the 11 studies, in addition, by one or more of the following: sex, race, education, marital status, country of birth, smoking, total alcohol intake, exercise intensity, depression score, frequent aspirin use, cholesterol, BMI, diabetes, hyperlipidaemia, cancer, physical activity, cohabitation, coffee, consumption of other beverage types, total daily energy and saturated fat intake, intake of vegetables, fruit, fish, saturated and trans fatty acids, socioeconomic status, history of heart disease, AMI, hypertension, etc. Bell et al., 2017: Adjusted for age (and age2), sex, socioeconomic deprivation, and smoking status. Snow et al., 2009: Adjusted for marital status, cigarette smoking status and educational level.
Table
Table 5. Summary of main mortality studies.
Table 5. Summary of main mortality studies.
Study
Funding/COI a		Design (Mean/Median Years of Follow-Up)n (Women)Categories of Alcohol Consumption/Type of DrinkVariable/sReference Group (HR = 1) Outcomes/Conclusions b
de Gaetano et al., 2016 [34]
Assobirra, the
Italian Association of the Beer and Malt Industries/ Some authors were consultants for the Web Newsletter
of Assobirra, or were on the board/received lecture fees from Fundación Cerveza y Salud, FIVIN, the Beer and
Health Foundation, ERAB, or Cerveceros
de España.		Systematic review Wine, beer, and spiritsAll-cause mortality Evidence suggests a J-shaped relationship between alcohol consumption and total mortality, with lower risk for moderate alcohol consumers than for abstainers or heavy drinkers.
Specific data on beer are not conclusive, although some results indicate a positive role of drinking beer in moderation (1 drink/day, about 12 g of ethanol) against mortality for any cause
1 meta-analysis of 34 prospective studies [65]Over 1 million adultsLow to moderate Women: 1 drink/day. Men: 2 drinks/day
/
Wine, beer, and spirits		All-cause mortality Low to moderate consumption of alcohol significantly reduces total mortality, while higher doses increase it
1 Prospective cohort [66]
(12–18 y)		36,250 menWine and beerCV death
All-cause mortality		Non-drinkersModerate wine or beer drinking reduced the risk of CV death.
Only moderate wine drinking was associated with lower all-cause mortality: RR: 0.67 (0.58 to 0.77; p < 0.001)
1 Prospective cohort [67]
(16.8 y)		7735 British men 40–59 y old 1 SDU: Half pint beer (8–10 g alcohol). Frequency: Non-drinkers; Occasional (1–2 SDU/month); Weekend drinkers; Daily or on most days. Quantity: 1–2, 3–6, >6
/
Wine, beer, and spirits		All-cause mortalityOccasional drinkersRegular beer drinking [HR: 0.84 (0.71 to 1.01)] showed no significant difference vs. occasional drinking
1 Prospective cohort [68]
Copenhagen City Heart Study (25 y)		14,223 adults1 SDU: 1 bottle beer (12 g alcohol). Never, Hardly ever, Monthly, Weekly
Daily: 1–2 SDUs
Daily: >2 SDUs
/
Wine, beer, and spirits		All-cause mortalityNever beer drinkersIn men, monthly beer intake (RR: 0.86 (0.77 to 0.97)) was associated with lower mortality, and daily intake >2 beers (RR: 1.14 (1.02 to 1.27)) to increased risk.
In women the associations were not statistically significant: Monthly beer intake (RR: 0.98 (0.88 to 1.08)), and daily intake >2 beers (RR: 1.31 (0.92 to 1.88))
At a medium education level, monthly beer intake was associated with lower risk (RR: 0.87 (0.77 to 0.97)), and at low [RR:1.20 (1.07 to 1.34) and medium education level (RR:1.18 (1.02 to 1.37)), >2 beers daily was associated with increased risk.
1 Prospective cohort [69]
(12.6 y)		380,395 adults (247,795 women)For beer:
Never. Light: 0.1–2.9 g/day, 3–9.9 g/day, 10–19.9 g/day, 20–39.9 g/day (only for men). ≥20 g/day (extreme for women)
≥40 g/day (extreme for men)
/
Wine and beer		All-cause mortalityLight consumers (0.1–2.9 g/day)In women:
Compared to low-level consumers, lifetime non-drinkers (HR: 1.06; 1.02 to 1.12), and consumers of beer at amounts ≥3 g/day displayed significantly higher overall mortality risk.
In men:
Lifetime non-drinkers (HR: 1.07; 0.98 to 1.16) and consumers of 3–9.9 g/day (HR: 1.04; 0.98 to 1.10) showed no significant differences compared to light consumers.
Consumers of beer amounts ≥10 g/day displayed a significantly higher overall mortality risk.
Stockwell et al., 2016 [53]
None declared		Systematic review/meta-analysis of 87 studies
(13.4 y)		3998,626 adultsAbstainer. Former drinker. Occasional: <1.30 g/day. Low: 1.30 to <25 g /day. Medium: 25 to <45 g/day
High: 45 to <65 g/day. Higher: ≥65 g/day
/
Alcohol in general		All-cause mortalityAbstainer OR occasional drinkerStandard adjustment: Significant protective effect for low-volume (RR: 0.86 (0.83 to 0.90); p < 0.0001) and occasional drinkers (RR: 0.84 (0.79 to 0.89); p < 0.0001) as compared with abstainers.
Abstainers were at significantly higher risk (RR: 1.19 (1.12 to 1.27); p < 0.0001) as compared to occasional drinkers.
Full adjustment: No significant protection was estimated for occasional (RR: 0.95 (0.85 to 1.05)), low-volume (RR: 0.97 (0.88 to 1.07)), or medium-volume drinkers (RR: 1.07 (0.97 to 1.18)) as compared with abstainers.
Xi et al., 2017 [51]
None declared		Population survey data linked to mortality data
(8.2 y)		333,247 adults1 SDU: 14 g alcohol. Lifetime abstainers. Lifetime infrequent drinkers. Former drinkers. Current light drinkers. Moderate: >3 to ≤14 drinks/w for men or >3 to ≤7 drinks/w for women. Heavy drinkers. Binge drinking
/
Alcohol in general		All-cause, cancer, or CVD mortality.Lifetime abstainersAll cause-mortality: Decreased for Light (HR 0.79 (0.76 to 0.82)) and Moderate (HR 0.78 (0.74 to 0.82)) drinkers.
Increased in Heavy: HR: 1.11 (1.04 to 1.19) and binge (HR: 1.13 (1.04 to 1.23)) drinkers.
CVD-specific mortality: Light: HR 0.74 (0.69 to 0.80); Moderate: HR 0.71 (0.64 to 0.78)
Bell et al., 2017 [49]
National Institute for Health Research,
Welcome Trust, the Medical Research Council prognosis research strategy
Partnership and other government health-related agencies.		Prospective cohort
(6 y)		1937,360 (51% women)1 SDU c: 8 g
Non-drinkers. Former drinkers
Occasional drinkers: drinks rarely or occasionally. Moderate: Men: 21 SDU/w or 3 SDU/day. Women: 14 SDU/w or 2 SDU/day
Heavy drinkers
/
Alcohol in general		CV death and all-cause mortalityModerate drinkers Non-drinkers (former and occasional drinkers removed) had an increased risk of CV death (HR: 1.32 (1.27 to 1.38)) and all-cause mortality (HR: 1.24 (1.20 to 1.28)).
Suadicani, 2008 [61]
The King Christian X’s Foundation, The Danish Medical Research Council, The Danish Heart Foundation, and The Else & Mogens
Wedell Wedellsborg Foundation.		Prospective cohort
(16 y)		3022 Caucasian males
53–74 y old		1 SDU: 10–12 g ethanol
/
Wine, beer, and spirits		All-cause and IHD-related death within the different blood phenotypesAlcohol abstainers (comparison only for wine drinkers)For beer, the median (P20, P80) number of drinks/week among those with the non-O phenotype was significantly higher in those who died (overall mortality): 10.5 (0, 15.5) vs 7.5 (0, 10.5); p ≤ 0.001.
The effect of wine intake on all-cause mortality among middle-aged and elderly men may depend on ABO phenotypes. Among non-O phenotype, drinking 1–8 drinks/w: HR: 0.8 (0.7 to 1.8) and drinking >8 drinks/w: HR: 0.7 (0.6 to 0.98)
CV. Cardiovascular; CVD: Cardiovascular disease; ERAB: European Foundation for Alcohol Research; FIVIN: the Foundation for Wine and Nutrition Research; HR: Hazard Ratio; IHD: Ischemic heart disease; OR: Odds Ratio; SDU: Standard drinking unit; (to): 95%CI a When funding is provided by industries and/or foundations that might represent a conflict of interest, it is written in bold. b Outcomes for prospective studies and meta-analyses, and Conclusions for reviews. c Since Bell et al. follow UK guidelines, 1 SDU was assumed to be 8 g alcohol. Adjustments: de Gaetano et al., 2016: (A) 1 Prospective cohort [67]; For age, social class, smoking, physical activity, body mass index, lung function, evidence of CHD on questionnaire, diabetes, and regular medication. (B) 1 Prospective cohort [68]; For other types of alcohol, sex, smoking, body mass index, physical activity in leisure time, cohabitation, and education. (C) 1 Prospective cohort [69]; For age at recruitment, BMI and height, former drinking, time since alcohol quit-ting, smoking status, duration of smoking, age at start smoking, educational attainment, and energy intake. In women also for menopausal status, ever use of replacement hormones and number of full-term pregnancies. Stockwell et al., 2016: Standard adjustment for between-study variation in covariates: Former drinker, Occasional (<1.30 g/day), Low volume (1.30 to <25 g /day), Medium volume (25 to <45 g/day), High volume (45 to <65 g/day), Higher volume (65 g/day), All drinkers combined. Full adjustment for study characteristics: median age at intake, sex, Caucasian/non-Caucasian, drinking measure adequacy, former drinker bias, and occasional drinker bias. Xi et al., 2017: Model 1: Adjusted for age, sex, and race or ethnicity. Model 2: Additional adjustments for education, marital status, body mass index, physical activity, smoking, and diabetes) Bell et al., 2017: HRs adjusted for age (and age 2), sex, socioeconomic deprivation, and smoking status. Suadicani, 2008: Age adjusted (only for wine drinking).
Table
Table 6. Summary of main obesity, diabetes, and osteoporosis studies.
Table 6. Summary of main obesity, diabetes, and osteoporosis studies.
Study
Funding/COI a		Design (Mean/Median Years of Follow-Up)n (Women)Categories of Alcohol Consumption/Type of DrinkVariable/sReference Group
(HR = 1)		Outcomes/Conclusions b
Fresan et al., 2016 [52]
The Spanish Ministry of Health, the Navarra Regional Government, and the University of
Navarra.		Prospective cohort
(4 y)		15,765 adultsBeverages groups:
Water, low/non-caloric beverages (diet soda beverages, coffee without sugar), milk, juice, and sugared coffee (dairy products, juices, coffee with sugar).
Occasional consumption (SSSBs and spirits). Wine, beer		Change in BW and new-onset obesityNo substitutionSubstitution of one beer with one serving of water per day at baseline was related to a lower incidence of obesity (OR 0.81, 95%CI 0.69 to 0.94 and OR 0.84, 95%CI 0.71 to 0.98, when further adjusted for the consumption of other beverage groups) and to higher weight loss (−328 g, 95%CI −566 to −89).
Bendsen et al., 2013 [55]
The Dutch Beer Institute (funded by the Dutch Brewers)/ Three of the authors are employed by or are board members of the Dutch Beer Institute.		Systematic review of 35 observational studies and 12 experimental studies
Meta-analyses:
14 observational studies (11 cross-sectional and 3 prospective) included in dose-response graphs. 10 intervention studies (6 beer vs non-alcoholic beer and 4 beer vs control) included in quantitative synthesis		 1 SDU beer =
330 mL, 4.6% alcohol =
12 g/drink.
/
Beer		BW increase, BMI, and abdominal obesity (WC and WHR)Control: Non-drinkers or in the absence of non-drinkers, the group with the lowest beer intake
Low or non-alcoholic beer		Dose-response graphs: High beer intake (>4 L/w) was associated with a higher degree of abdominal obesity in men.
Quantitative synthesis: High beer consumption (about 1000 mL/day; 5% alcohol) did not result in increased BW compared with control groups but did result in increased BW compared with low- or non-alcoholic beer groups (mean difference 0.73 kg, 95% CI: 0.53 to 0.92; z = 7.39, p < 0.0001, I2 = 0%)
Schütze et al., 2009 [59]
The German Cancer Aid, the German Federal Ministry of
Education and Research and the European Union.		Prospective cohort
(8.5 y)		20,625 (12,749 women)WOMEN:
No beer. Very light: >0 to <125 mL/day. Light: ≥125 to <250 mL/day. Moderate: ≥250 mL/d
MEN:
No beer. Very light: >0 to <250 mL/day. Light: ≥250 to <500 mL/day. Moderate: ≥500 to <1000 mL/day
Heavy: ≥1000 mL/day
/
Beer		WC change
BW change		Very lightMEN: Moderate beer consumption showed significant lower relative odds for WC loss (OR 0.44, 95%CI 0.24 to 0.80)
WOMEN: Although beer-abstaining women showed significantly lower relative odds (OR.0.88; CI 0.81, 0.96) for WC gain compared with their very-low-level-drinking counterparts, significance was lost once the model was adjusted by HC change; however, the new OR was on the border of significance (OR.0.91; CI 0.83, 1.00)
Padro et al., 2018 [46]
Fundacion Cerveza y Salud, Madrid, Spain; The European Foundation for Alcohol Research; Spanish Ministry of Economy and Competitiveness of Science; Institute of Health Carlos III.		Open-label, prospective randomized, two-arm, longitudinal cross-over36 (15 women)WOMEN:
330 mL/day normal or non-alcoholic beer (15 g/day or 0 g/day alcohol)
MEN:
660 mL/day normal or non-alcoholic beer (30 g/day or 0 g/day alcohol)
/
Beer		BMI
T2D
Lipid Profile		 Moderate beer consumption (traditional or alcohol-free) does not increase body weight in obese healthy individuals or have negative effects on the vascular system. Moderate consumption was associated with reduced risk of dyslipidemia, increased anti-oxidative properties of high-density lipoprotein, and increased efflux of cholesterol.
Polsky et al., 2017 [50]
None declared		Systematic Review of 96 studies18 studies included more than 10,000 subjects each.Alcohol in general Moderate alcohol consumption generally reduces diabetes risk.
Cullman et al. 2012 [43]
The Swedish Research
Council; the Swedish Diabetes Association; the Swedish Council
of Working Life and Social research; and
Novo Nordisk Scandinavia.		Prospective cohort
(8–10 y)		5128 adults (3058 women) with normal glucose tolerance and 111 (41 women) with pre-diabetes.
35–56 y old		Abstainers
Total alcohol
Occasional: 0.01–1.49 g/day in women, 0.01–6.79 g/day in men. Low: 1.50–4.71 g/day in women, 6.80–13.01 g/day in men. Medium: 4.72–8.75 g/day in women, 13.02–22.13 g/day in men. High: ≥8.76 g/day in women, ≥22.14 g/day in men
Wine
Occasional: ≤0.32 g/day in women, ≤0.99 g/day in men. Medium: 0.33–1.65 g/day in women, 1–4.99 g/day in men. High: ≥1.66 g/day in women, ≥5 g/day in men
Beer (only in men)
Occasional: ≤0.99 g/day. Medium: 1–4.99 g/day. High: ≥5 g/day
/
Wine, beer and spirits		PreD
T2D
PreD + T2D		Occasional drinkersNormal glucose tolerance at baseline
MEN: High alcohol: Higher risk of preD + T2D (OR 1.42, 95% CI 1.00–2.03). High beer: Higher risk of preD + T2D (OR 1.63, 95% CI 1.07–2.48) and higher risk of preD (OR 1.84, 95% CI 1.13–3.01)
Abstainers vs occasional wine or beer drinkers: Higher risk of preD + T2D (OR 2.01, 95%CI 1.01–3.98 and OR 2.13, 95%CI 1.03–4.39, respectively).
WOMEN: High wine: lower risk of preD (OR 0.66, 95% CI 0.43–0.99)
Normal glucose tolerance or preD at baseline
WOMEN: Low alcohol: Lower risk of T2D (OR 0.41, 95% 0.22–0.79). Medium wine: Lower risk of T2D (OR 0.46, 95%CI 0.24–0.88)
Yin et al., 2011 [58]
National Health and Medical Research Council of Australia, Tasmanian Government and
Royal Hobart Hospital Acute Care Programme.		Prospective cohort
(2 y)		862 (49% women)
Mean age 63 y, range 51–81		1SDU: 10 g alcohol
Frequency:
Never, <once a month, 1–3 days/month, 1/2/3/4/5/6 days /wk, every day.
Amount
30mL spirits: 1 glass. 1 can beer: 2 glasses. 1 bottle wine (750 mL): 6 glasses. 1 bottle sherry (750 mL): 12 glasses. g/day
/
Wine, beer, and spirits		BMD change Total alcohol intake in men positively predicted change in BMD at the lumbar spine and hip (beta = 0.008% and 0.006% per year per gram of alcohol intake, p < 0.05).
The frequency of drinking red wine was positively associated with percentage change in BMD at the lumbar spine in men (beta= 0.08% per year per class, p= 0.048).
At baseline, lumbar spine BMD was positively associated with frequency of low-alcohol beer drinking in women (beta = 0.034 g/cm(2) per category, p = 0.002).
Mukamal et al., 2007 [62]
The National Heart, Lung, and Blood Institute. The National Institute on Ageing.		Prospective population-based cohort study
(12 y If no hip fracture
7.5 y If hip fracture)		5865
≥60 y		1 SDU: 12-ounce can or bottle of beer, 6-ounce glass of wine, and 1 shot of liquor. 1 SDUc = 14 g
Categories
Long-term abstainers, former drinkers, <1 drink/w, 1–6 drinks/w, 7–13 drinks/w, ≥14 drinks/w
/
Wine, beer, and spirits		Hip fracture
BMD		Long-term abstainersStrong, graded, positive relationship between greater alcohol consumption and greater BMD up to 13 drinks/week.
U-shaped relationship between alcohol intake and risk for hip fracture (quadratic trend: p = 0.02), with lower HRs in intermediate drinking categories.
Drinking <1 beer/w showed a significantly lower risk of hip fracture (HR 0.66, 95%CI 0.44–0.99).
BMD: Bone Mineral Density; BMI: Body mass index; BW: Body weight; COI: Conflict of interest; HR: Hazard Ratio; OR: Odds Ratio; PreD: Pre-diabetes; SDU: Standard drinking unit; SSSBs: Sugar-sweetened soda beverages; T2D: Type 2 diabetes; WC: Waist circumference; WHR: Waist-to-hip ratio. a When funding is provided by industries and/or foundations that might represent a conflict of interest, it is written in bold. b Outcomes for prospective studies and meta-analyses, and Conclusions for reviews. c 14 g are inferred from the amounts of the different beverages constituting 1 SDU and the American guidelines. White rows: Diabetes studies; Light grey rows: Obesity studies; Dark grey rows: Osteoporosis studies. Adjustments: Fresan et al., 2016: Sex, age, age squared, baseline BMI, physical activity, smoking habit, personal and family history of obesity, following a special diet, adherence to the Mediterranean dietary pattern, snacking between meals, weight change during the five years prior to baseline, and total energy intake from other sources than the exchanged beverages. When the analyses were carried out for group of beverages, an additional adjustment for servings per day of other groups was conducted. Schütze et al., 2009: Age, physical activity, smoking, change in smoking status, alcohol in g/d from other alcoholic beverages, education, waist circumference at baseline, total non-beer energy intake, incident diseases during follow-up time and for women, additionally for menopausal status. Further adjustment for concurrent changes in body weight and hip circumference. Cullman et al. 2012: Age, BMI, tobacco use, physical activity, family history of diabetes and education (and the other beverage types when analyzing a specific beverage) Yin et al., 2011: Age, body mass index, physical activity, medication, calcium intake, and smoking. Mukamal et al., 2007: Age, sex, race, current weight, and height. Further adjustment: Smoking status, difficulty arising from a chair or bed, arthritis, diabetes, hypertension, clinical cardiovascular disease, previous cancer, weight in early teens, leisure-time physical activity, visual problems, MMSE score, and use of estrogens, thiazide-type diuretics, and thyroid agents.
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Marcos, A.; Serra-Majem, L.; Pérez-Jiménez, F.; Pascual, V.; Tinahones, F.J.; Estruch, R. Moderate Consumption of Beer and Its Effects on Cardiovascular and Metabolic Health: An Updated Review of Recent Scientific Evidence. Nutrients 2021, 13, 879. https://doi.org/10.3390/nu13030879

AMA Style

Marcos A, Serra-Majem L, Pérez-Jiménez F, Pascual V, Tinahones FJ, Estruch R. Moderate Consumption of Beer and Its Effects on Cardiovascular and Metabolic Health: An Updated Review of Recent Scientific Evidence. Nutrients. 2021; 13(3):879. https://doi.org/10.3390/nu13030879

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Marcos, Ascensión, Lluís Serra-Majem, Francisco Pérez-Jiménez, Vicente Pascual, Francisco José Tinahones, and Ramón Estruch. 2021. "Moderate Consumption of Beer and Its Effects on Cardiovascular and Metabolic Health: An Updated Review of Recent Scientific Evidence" Nutrients 13, no. 3: 879. https://doi.org/10.3390/nu13030879

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