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Article

Association between Eating Speed and Classical Cardiovascular Risk Factors: A Cross-Sectional Study

by
Indira Paz-Graniel
1,
Nancy Babio
1,2,*,
Ignacio Mendez
1 and
Jordi Salas-Salvadó
1,2
1
Department of Biochemistry and Biotechnology, Human Nutrition Unit, Universitat Rovira i Virgili, Institut d’Investigació Sanitària Pere i Virgili (IISPV), Hospital Universitati Sant Joan de Reus, Reus 43201, Spain
2
Consorcio CIBER, M.P. (CIBEROBN), Fisiopatología de la Obesidad y la Nutrición, Instituto de Salud Carlos III (ISCIII), Madrid 28029, Spain
*
Author to whom correspondence should be addressed.
Nutrients 2019, 11(1), 83; https://doi.org/10.3390/nu11010083
Submission received: 30 November 2018 / Revised: 26 December 2018 / Accepted: 26 December 2018 / Published: 4 January 2019
Versions Notes

Abstract

:
Cardiovascular disease (CVD) is one of the main causes of morbidity and mortality around the world. Lifestyle is recognized as a key factor in the development of metabolic disorders and CVD. Recently, eating speed has been of particular interest since some studies have associated it with the development of obesity and other cardiometabolic disorders. We aimed to assess the association between eating speed and various cardiovascular risk factors. We conducted a cross-sectional analysis within the framework of the PREDIMED (Prevención con Dieta Mediterránea) study with 792 participants from the Reus-Tarragona center. Eating speed was self-reported according to participant perception and categorized as slow, medium, or fast. The association between eating speed and cardiovascular risk factors was assessed using Cox regression models with constant time of follow-up for all individuals. Compared to participants in the slow eating speed category, those in the faster eating speed category were 59% more likely to have the hypertriglyceridemia component of the metabolic syndrome (MetS) (Hazard Ratio, (HR) 1.59; 95% Confidence Interval (CI) 1.16–2.17), even after adjustment for potential confounders (HR 1.47; 95% CI 1.08–2.02). No other significant differences were observed. Eating speed was positively associated with the prevalence of the hypertriglyceridemia component of the MetS in a senior population at high cardiovascular risk.

1. Introduction

Cardiovascular disease (CVD) is one of the main causes of morbidity and mortality in developed countries. Hypertension, dyslipidemia, type 2 diabetes mellitus, overweight/obesity, and metabolic syndrome (MetS) are considered risk factors for the development of CVD.
Various lifestyle factors such as physical activity, smoking, and diet have been recognized as important modifiable risk factors for CVD [1]. Therefore, several public health strategies promoting physical activity, smoking cessation, and a healthy dietary pattern have been developed for CVD prevention [2].
Recently, non-nutritional factors such as the number of daily meals, snacking, and eating speed or eating speed rate, have also been associated with an increased risk of obesity [3,4], abdominal obesity [5], and other cardiovascular risk factors [6].
In fact, a systematic review and meta-analysis of several cross-sectional [7,8,9,10] and longitudinal [11,12,13] studies, most of which were conducted in Asian populations, showed that eating quickly is associated with increased body mass index (BMI) and a greater risk of obesity [14]. However, the magnitudes of association across studies were significantly heterogeneous, something that was attributed to differences between the populations studied and to the methods used to measure eating speed (self-reported eating speed or self-reported eating rate) [14]. Furthermore, cross-sectional and longitudinal studies have revealed controversial findings on gender.
The mechanisms explaining these associations are unclear. High energy intake over a short period of time could interfere with satiety signals and consequently lead to weight gain and an increase in total energy consumption in the long term [15]. Through this mechanism, and perhaps others, eating speed might also have a negative effect on metabolism [16]. In fact, an association between eating speed and various cardiometabolic risk factors has also been reported in some studies [17].
Because of this heterogeneity between studies, the aim of our study was to cross-sectionally assess the associations between self-reported eating speed and the risk of obesity, dyslipidemia, MetS and its components in a senior Mediterranean population at high cardiovascular risk.

2. Materials and Methods

This cross-sectional study was carried out within the framework of the PREDIMED (Prevención con Dieta Mediterránea)-Reus study, a large, parallel-group, clinical trial aiming to assess the effects of the Mediterranean diet on the primary prevention of CVD, the design of which has been described in detail elsewhere [18,19,20].
Eligible participants were men and women aged 55 to 80 years with no previous history of cardiovascular disease and with either type 2 diabetes or at least three of the following CVD risk factors: current smoking, BMI ≥ 25 kg/m2; blood pressure ≥140/90 mmHg or treatment with antihypertensive medication; serum low density lipoprotein-cholesterol (LDL-c) ≥ 160 mg/dL or treatment with hypocholesterolemic agents; high density lipoprotein-cholesterol HDL-c ≤ 40 mg/dL in men and ≤50 mg/dL in women; or family history of early-onset CVD (≤55 years in men and ≤60 years in women).
The project was approved by the Ethical Committee of the Reus-Hospital de Sant Joan, and all the participants signed the corresponding informed consent. The PREDIMED trial was registered at http://www.controlled-trials.com (ISRCTN35739639). A detailed protocol has been published [20] and it is available online (http://www.predimed.es).
Participants were excluded if they did not complete the eating behavior questionnaire that was the object of this study, if they did not complete the baseline food frequency questionnaire (FFQ), or if they reported extreme total energy intakes with values outside the pre-specified limits (500–3500 kcal/day in women and 800–4000 kcal/day in men).
Participants completed the following: (a) a questionnaire on lifestyle variables, medical history, and medication use; (b) a 14-item validated questionnaire [21,22] designed to assess adherence to the MedDiet; (c) a validated 137-item semi-quantitative FFQ [23], (d) the validated Spanish version of the Minnesota Leisure-Time Physical Activity Questionnaire [24,25], and (e) a non-validated ad-hoc eating behavior questionnaire that included information about how they perceived their eating speed in the main meals classified in five categories (very slow, relatively slow, medium, relatively fast, very fast), the number of main meals they ate during the day, and whether they used dental prosthesis or not. The same information was collected from a sub-sample of 122 partners of the participants. The correlation coefficient between self-reported eating speed and the eating speed reported by his/her partner was 0.472, n = 122; p ≤ 0.001.
Anthropometrical variables and blood pressure measurements were determined by trained staff. Height and weight were measured with light clothing and no shoes. Waist circumference was measured midway between the lowest rib and the iliac crest. Blood pressure was measured using a validated oscillometer (Omron HEM705CP, Hoofddorp, The Netherlands) in triplicate with a 5-min interval between each measurement, and the mean of these values was recorded.
Blood samples were collected from all participants after a 12-hour overnight fast. Plasma glucose, serum HDL-c, and triglyceride levels were measured using standard enzymatic automated methods.
Overweight and obesity were defined using the WHO (World Health Organization) criteria: participants with a BMI between 25 and 29.9 kg/m2 were regarded as overweight, and those with a BMI ≥ 30 kg/m2 were regarded as obese [26]. MetS was defined in accordance with the updated harmonized criteria of the International Diabetes Federation and the American Heart Association/National Heart, Lung, and Blood Institute [27]. Individuals were diagnosed with MetS if they presented three or more of the following components: waist circumference >102 cm in men and >88 cm in women; serum triglyceride >150 mg/dL or drug treatment for elevated triglycerides; HDL-c <40 mg/dL in men and <50 mg/dL in women or drug use for low HDL-c; blood pressure ≥130/85 mmHg or antihypertensive drug treatment; and fasting plasma glucose level ≥100 mg/dL or hypoglycemic treatment.
The data are presented as means ± standard deviation (SD) for quantitative variables and as numbers and percentages for qualitative variables. The variables that did not present a normal pattern according to the Kolmogorov-Smirnov tests were transformed logarithmically prior to statistical analysis. We used Pearson’s chi squared test for qualitative variables and t-tests or one-way analysis of variance (if more than two variables were analyzed) for a quantitative independent variable and a quantitative dependent variable.
Given the cross-sectional design, Cox regression models with constant follow-up time (t = 1) for all individuals were fitted to estimate Hazard Ratio (HR) and 95% confidence intervals (CIs) and assess the association between eating speed and obesity, as well as MetS and/or its components. According to methodologists, this model is better suited than logistic regression to cross-sectional studies with frequent prevalent outcomes, such as the present study, since it avoids overestimating the prevalence ratios derived from the odds ratios when logistic regression is applied in analyses with frequent outcomes [28,29]. Because of the difference in the number of individuals in the various categories of eating speed, the slow and relatively slow categories, and fast and relatively fast categories were respectively merged, and the final categories used were slow, medium, and fast. For all models, the slow speed category was taken as a reference. Models were adjusted for the following possible confounding variables: age, sex (women or men), educational level (low-medium or high), smoking status (current, former, never smoker), use of dental prosthesis (yes or no), total energy intake (kcal/day), alcohol consumption (g/day), physical activity Metabolic Equivalent Task (MET/min/day), and adherence to MedDiet (categorized as low when participants scored <8 points or high when they scored 8≤ on the respective questionnaire).
The PREDIMED trial recently reported some slight departures from the randomization protocol that affected a small subset of participants [18]. However, a proper randomization was conducted at the PREDIMED-Reus recruitment site, in which only a small number of participants were directly allocated to the same arm of the trial as their relatives because a previous member of the same household (usually the spouse) had already been randomized in the trial (n = 29; 6.9% of the total sample). To address this issue, we applied robust estimates of the variance to correct for intra-cluster correlation in the Cox regression models.
All statistical tests were two-sided, and the significance level was set at p values ≤ 0.05. All analyses were performed using StataCorp. 2015. Stata Statistical Software: Release 14 (StataCorp LP, College Station, TX, USA).

3. Results

Of the 877 participants randomized in the Reus-Tarragona PREDIMED center, 73 were excluded because they had not completed the corresponding food behavior questionnaire. Twelve participants who reported extreme total energy intakes with values outside the pre-specified limits were also excluded. Therefore, the final sample was 792 participants (57% female and 43% male), with a mean age of 67.51 ± 5.86 years, and a mean BMI of 29.62 ± 3.32 kg/m2. In terms of eating speed, 22.9%, 31.7%, and 45.5% of the study participants were classified into slow, medium, and fast eating speed categories, respectively. The general and dietary characteristics of the participants in these categories are summarized in Table 1 and Table 2, respectively.
Participants who self-reported a fast eating speed were most frequently younger women who had higher values of diastolic blood pressure, BMI, and plasma triglycerides than those in the slow category. There were fewer participants with dental prosthesis in the fast-eater category than in the slow-eater category. In addition, individuals who self-reported a faster eating speed had a higher prevalence of hypertriglyceridemia than those in the slow category.
Individuals in the fast eating speed category consumed a significantly higher percentage of energy as protein and less total alcohol than those in the slower eating speed category. No differences in total energy and other nutrients intake were shown between categories of eating speed.
Table 3 shows the associations between eating speed categories and various cardiovascular risk factors. Compared to those in the slow category of eating speed, participants in the fast category showed an increased risk of obesity (HR 1.22; 95% CI 1.00–1.49). However, this association was not significant after adjusting for confounding factors (HR 1.15; 95% CI 0.94–1.40). In addition, individuals in the fast category had a significant 59% higher risk of hypertriglyceridemia (HR 1.59; 95% CI 1.16–2.17) than those in the slow category. This association remained statistically significant after confounding factors had been adjusted for in a multivariable model (HR 1.47; 95% CI 1.08–2.02). No statistically significant associations were observed with other cardiovascular risk factors.
In order to prove the robustness of the associations observed, we conducted sensitivity analysis by adjusting our models for the other four MetS individual components except the component of interest, and the association remained unchanged (data not shown). An additional text file shows this in more detail (see Supplementary Table S1).

4. Discussion

In this cross-sectional study, self-reported eating speed was positively associated with the prevalence of hypertriglyceridemia in a senior population at high cardiovascular risk, even after potential confounders had been adjusted for. However, no associations were observed between eating speed and the prevalence of obesity or MetS and its following components: central obesity, low HDL-c, high fasting glucose, and high blood pressure.
Investigating the association between eating speed and weight status, previous studies, mostly conducted in a middle-aged Asian population, have demonstrated a positive association between eating speed, BMI [7,8,9,10], and obesity prevalence [30,31]. This association has been reported in a healthy population but also in individuals with type 2 diabetes [32]. The only cross-sectional study to have been conducted in European men and women showed a positive association between self-reported eating rate and BMI. However, after adjusting for possible confounders, this association only remained in women [10]. Only two longitudinal studies in healthy populations—one from New Zealand [11] conducted in women, and the other from Japan [12] conducted in men—have analyzed the association between eating speed and weight change, and positive associations were reported in both. A recent longitudinal study conducted in a Japanese population with type 2 diabetes mellitus (T2DM) showed that those individuals eating slower at baseline had a lower prevalence of obesity [13] and had lower BMIs and waist circumferences than those eating fast after 6 years of follow-up. In contrast to this evidence, even though we observed significant differences in BMI and obesity prevalence among eating speed categories, the possible associations between these variables and eating speed categories did not reach statistical significance.
Only one case-control [33], one longitudinal [34], and two cross-sectional [9,17] studies have shown significant associations between eating speed and other cardiometabolic risk factors. In a study conducted on 30 non-alcoholic, non-diabetic, severely obese women, the eating rate positively correlated with the waist-hip circumference and levels of triglycerides [33]. In a cross-sectional analysis of Korean men, an inverse association between eating speed rate and HDL-c levels were observed [9]. In another cross-sectional study conducted on a Chinese population, investigators observed that eating speed might increase the risk of MetS, blood pressure, and central obesity for both genders. In addition, an increased risk of elevated triglycerides and reduced HDL-c levels for males and elevated fasting plasma glucose for females was observed [17]. In a three-year follow-up study [34], a higher incidence of MetS was observed in fast eaters than in slow eaters. Compared to the slow eating speed category, those participants in the highest category had a higher risk of abdominal obesity, hypertriglyceridemia, and low HDL-c level components of the MetS. However, no associations were reported for blood pressure and glucose.
The possible mechanisms linking the speed of eating and obesity, hypertriglyceridemia, and other metabolic alterations are unclear. As far as BMI and obesity status are concerned, it has been suggested that eating fast may contribute to a delayed feeling of fullness and satiety compared to eating slowly [8,35,36]. Accordingly, a randomized cross-over study examined the effect of eating speed at breakfast on appetite hormone response, total daily intake, and subjective appetite perceived by the participants. Desire to eat at 60 min was significantly lower in the slow than in the fast eaters, but no association was found between breakfast eating speed and peripheral appetite hormone concentrations (ghrelin, GLP-1, PYY), hunger, fullness, or daily energy intake [37]. Another cross-over clinical trial conducted on normal-weight and overweight participants compared the effect of consuming the same meal ad libitum, but at different speeds, and assessed the weight and energy content of the food as well as perceived hunger and fullness at different times using visual analog scales. In this study, eating slowly significantly lowered meal energy intake in the normal-weight group but not in the overweight/obese group, and led to lower hunger ratings in both groups and increased fullness ratings in the normal-weight group 60 min after the meal had begun [38]. Nevertheless, in our study we did not observe significant differences in total daily energy intake between self-reported eating speed categories. As far as hypertriglyceridemia is concerned, some authors suggested that the intake of a high amount of energy over a short period induces more sustained peaks in plasma glucose and insulin [16], which could favor an anabolic state that stimulates liver lipogenesis and therefore increases plasma triglyceride levels [33,39].
Our study has some limitations. First, our results came from a cross-sectional analysis and a causal relationship between eating speed and hypertriglyceridemia cannot be proven. Therefore, we cannot discount the possibility that the positive associations observed are due to other confounding factors not covered by the statistical analysis. Second, eating speed was self-reported, which may affect the validity of the results. Even so, when we studied the correlation between eating speed self-reported by the participants and the eating speed reported by their partners, a positive correlation was observed. Third, the present study focused on a senior population at high cardiovascular risk, therefore it is difficult to extrapolate our results to the general population. Finally, in our study we measured the self-reported eating speed (time perceived by the participants that they need to eat a main meal), but not the “eating speed rate” (determined by the total food consumption in gr/min or kcal/min) as other investigators have done.

5. Conclusions

Considering the aforementioned limitations, the results of our study suggest that eating faster increases the risk of hypertriglyceridemia, a recognized risk factor for CVD. Interventional and long-term studies are needed to clarify the cause–effect relationship between the speed of eating and BMI, or other cardiovascular risk factors. If these associations are proven, interventions aiming to decrease the speed of eating could be useful for designing strategies to fight cardiometabolic diseases.

Supplementary Materials

The following are available online at https://www.mdpi.com/2072-6643/11/1/83/s1, Table S1: Hazard ratio (95% IC) of different cardiovascular risk factors for self-reported eating speed categories.

Author Contributions

N.B. and J.S.-S. conceived the idea for the manuscript, drafted the paper plan, developed the data analysis plan, and led the writing of the manuscript. I.P.-G. assisted with conceptualization of the paper plan and undertook the data analyses. N.B., J.S.-S., I.M. and I.P.-G. contributed to data interpretation and led the writing of the discussion section of the manuscript. All authors contributed to revisions of the manuscript and approved the final version for submission.

Funding

This study was funded in part by the Spanish Ministry of Health (ISCIII), PI05/1839 PI10/01407, PI13/00462, PI16/00501, RD06/0045, FEDER (Fondo Europeo de Desarrollo Regional) and the Centre Català de la Nutriciò de l’Institut d’Estudis Catalans funded part of this study. Indira Paz Graniel received a grant from the the Spanish Ministry of Education, Culture and Sports (FPU 17/01925). None of the funding sources played a role in the design, collection, analysis, or interpretation of the data or in the decision to submit the manuscript for publication.

Conflicts of Interest

The authors declare no conflict of interest.

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Table
Table 1. General characteristics of the study population across self-reported eating speed categories.
Table 1. General characteristics of the study population across self-reported eating speed categories.
Eating Speed Categories
Slow n = 181Medium n = 251Fast n = 360pa Value
Women, % (n)54.70 (99)49.40 (124)63.61 (229)<0.01
Age, years68.82 ± 5.7268.20 ± 5.8166.37 ± 5.78<0.01
BMI (kg/m2)29.19 ± 3.5029.40 ± 3.1430.00 ± 3.320.01
Obesity, % (n)41.44 (75)41.04 (103)50.56 (182)0.03
Waist circumference (cm)
Women99.23 ± 9.6598.27 ± 7.8099.79 ± 8.560.28
Men102.74 ± 9.03103.37 ± 8.45103.24 ± 8.410.87
Smokers, % (n)
Current10.50 (19)13.55 (34)10.28 (37)0.24
Former26.52 (48)27.09 (68)21.67 (78)
Never smoker62.98 (114)59.36 (149)68.06 (245)
Physical activity, MET/min/day264 ± 217291 ± 311250 ± 2590.19
Education level, % (n)
Low-medium92.82 (168)94.82 (238)93.61 (337)0.68
High7.18 (13)5.18 (13)6.39 (23)
Prosthesis use, % (n)59.67 (108)54.18 (136)46.94 (169)0.02
Medication use, % (n)
Oral antidiabetics38.12 (69)34.26 (86)32.22 (116)0.39
Insulin7.73 (14)5.98 (15)6.11 (22)0.72
Hypocholesterolemic agents38.12 (69)45.02 (113)47.22 (170)0.13
Antihypertensive agents72.93 (132)74.50 (187)75.28 (271)0.84
Biochemical Parameters
Glucose, mg/dL123.57 ± 46.66121.83 ± 36.98118.47 ± 36.000.31
Triglycerides, mg/dL—median (IQR) b107.60 [76.00–141.97]120.90 [87.94–154.89]122.32 [92.73–166.10]<0.01
Total cholesterol, mg/dL207.95 ± 39.15208.38 ± 40.26209.67 ± 36.620.86
HDL-cholesterol, mg/dL—median (IQR)
Women58.13 [48.00–65.70]56.09 [49.90–66.61]55.34 [48.98–65.57]0.50
Men51.85 [44.08–58.80]48.10 [42.30–55.34]48.74 [42.00–55.98]0.03
Systolic blood pressure, mmHg151.59 ± 19.23150.46 ± 17.86149.72 ± 18.260.53
Diastolic blood pressure, mmHg81.83 ± 10.7582.99 ± 9.2484.13 ± 9.090.03
Data are expressed as mean ± SD for continuous variables and percentages, number (n) for categorical variables and median (IQR). a p value was calculated by the chi-square or ANOVA test for categorical and continuous variables, respectively. b Variables transformed logarithmically before analysis. Abbreviations: MET, Metabolic Equivalent Task; HDL, High Density Lipoprotein; IQR: Interquartile Range
Table
Table 2. Dietary characteristics of the study population across self-reported eating speed categories.
Table 2. Dietary characteristics of the study population across self-reported eating speed categories.
Eating Speed Categories
Slow n = 181Medium n = 251Fast n = 360pa Value
MedDiet b adherence (0–14 points)8.18 ± 1.978.34 ± 1.998.22 ± 1.830.64
Energy intake (Kcal)2290 ± 5122271 ± 5572282 ± 5330.94
Eating frequency, % (n)
1–2 meals/day15.17 (27)12.75 (32)19.17 (69)0.10
>3 meals/day84.83 (151)87.25 (219)80.83 (291)
Macronutrient distribution
Carbohydrate (g/day)228 ± 66227 ± 68231 ± 720.75
Carbohydrate, % of total energy39.85 ± 6.6839.84 ± 6.1240.23 ± 6.570.70
Protein (g/day)93 ± 2293 ± 2195 ± 210.23
Protein, % of total energy16.40 ± 2.5716.59 ± 2.4017.00 ± 2.580.02
Lipid (g/day)103 ± 26104 ± 29103 ± 270.95
Lipid, % of total energy40.77 ± 6.1941.00 ± 5.9340.71 ± 6.210.84
Dietary fiber (g/day)23.03 ± 7.5423.18 ± 7.8723.68 ± 7.650.58
Alcohol intake (g/day)10.65 ± 17.538.88 ± 12.417.33 ± 12.360.03
Data are expressed as mean ± SD for continuous variables and percentages and numbers (n) for categorical variables. a p value was calculated by chi-square or ANOVA test for categorical and continuous variables, respectively. b Mediterranean Diet.
Table
Table 3. Hazard ratio (95% CI) of different cardiovascular risk factors for self-reported eating speed categories.
Table 3. Hazard ratio (95% CI) of different cardiovascular risk factors for self-reported eating speed categories.
Eating Speed Categories
SlowMediumFast
n = 181n = 251n = 360
Obesity % (n)41.4 (75)41 (103)50.6 (182)
Crude model1 (Ref.)0.99 (0.79–1.24)1.22 (1.00–1.49)
Adjusted model a1 (Ref.)0.99 (0.80–1.24)1.15 (0.94–1.40)
Metabolic syndrome % (n)59.70 (108)61.00 (153)64.40 (232)
Crude model1 (Ref.)1.02 (0.88–1.19)1.08 (0.94–1.24)
Adjusted model b1 (Ref.)1.02 (0.88–1.18)0.99 (0.86–1.14)
Metabolic syndrome components
Central obesity % (n)74.60 (135)74.10 (186)78.90 (284)
Crude model1 (Ref.)0.99 (0.89–1.11)1.06 (0.95–1.17)
Adjusted model b1 (Ref.)1.00 (0.91–1.10)0.95 (0.87–1.04)
Hypertriglyceridemia % (n)21.60 (39) 29.10 (73)34.20 (123)
Crude model1 (Ref.)1.35 (0.97–1.89)1.59 (1.16–2.17)
Adjusted model b1 (Ref.)1.32 (0.95–1.85)1.47 (1.08–2.02)
Low HDL-C % (n)22.10 (40)21.10 (53)23.90 (86)
Crude model1 (Ref.)0.96 (0.67–1.37)1.08 (0.78–1.50)
Adjusted model b1 (Ref.)0.96 (0.68–1.37)0.94 (0.68–1.30)
High Blood Pressure % (n)96.10 (174)95.60 (240)96.40 (347)
Crude model1 (Ref.)0.99 (0.96–1.03)1.00 (0.97–1.04)
Adjusted model b1 (Ref.)1.00 (0.96–1.03)1.00 (0.97–1.04)
High fasting glucose % (n)65.20 (118) 65.70 (165)61.10 (220)
Crude model1 (Ref.)1.01 (0.88–1.16)0.94 (0.82–1.07)
Adjusted model b1 (Ref.)1.00 (0.87–1.15)0.92 (0.80–1.06)
Abbreviations: CI, confidence interval. a Model 1 adjusted for sex (female or male), age (years), educational level (low-medium, or high), smoking (current, former, or never), total energy intake, physical activity, oral prosthesis use (yes or no), alcohol consumption (g/d), MedDiet adherence (low or high). b Model 2 adjusted for variables from model 1. Additionally adjusted by BMI. All analyses were conducted with robust estimates of the variance to correct for intra-cluster correlation in the Cox regression models.

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Paz-Graniel, I.; Babio, N.; Mendez, I.; Salas-Salvadó, J. Association between Eating Speed and Classical Cardiovascular Risk Factors: A Cross-Sectional Study. Nutrients 2019, 11, 83. https://doi.org/10.3390/nu11010083

AMA Style

Paz-Graniel I, Babio N, Mendez I, Salas-Salvadó J. Association between Eating Speed and Classical Cardiovascular Risk Factors: A Cross-Sectional Study. Nutrients. 2019; 11(1):83. https://doi.org/10.3390/nu11010083

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Paz-Graniel, Indira, Nancy Babio, Ignacio Mendez, and Jordi Salas-Salvadó. 2019. "Association between Eating Speed and Classical Cardiovascular Risk Factors: A Cross-Sectional Study" Nutrients 11, no. 1: 83. https://doi.org/10.3390/nu11010083

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