Keywordsvitamin B6; pyridoxal 5’-phosphate; suboptimal status; deficiency; ethnicity; dietary intake; supplement use; women; periconceptional; vitamin B12; resistin; TNF-α; cardiometabolic diseases; folic acid; obesity; metabolic syndrome; adipose tissue; ‘aged 80 and over’; Newcastle 85+ Study; red blood cell folate; vitamin B12; FUT2; MTHFR; food groups; pregnancy; folate; betaine: homocysteine methyltransferase; BHMT c.716G>A; betaine; dimethylglycine; transcriptome; programming; developmental origins of health and disease; pregnancy; diet; riboflavin; methylenetetrahydrofolate reductase (MTHFR); hypertension; blood pressure; ABPM; DNA methylation; B-vitamins; ageing; degenerative diseases; cardiovascular disease; cognitive dysfunction; dementia; osteoporosis; methylenetetrahydrofolate reductase (MTHFR); folate; neural tube defects; vitamin B; choline; betaine; one-carbon metabolism; tea; alcohol; coffee; homocysteine; hyperhomocysteinemia; depressive symptoms; quality of life; vitamin B12; folic acid; older adults; randomized controlled trial; folate; B vitamins; dementia; aging; cobalamin; vitamin B12; vegetarian; vegan; food sources; deficiency; cardiovascular disease; neurological symptoms; supplements; diagnostic markers; folate-enriched eggs; folate stability; food folate analysis; novel foods; functional foods; pregnancy; obesity; pre-pregnancy BMI; B vitamins; inflammation; vitamin B12; gestational diabetes; obesity; macrosomia; metformin; homocysteine; vitamin B12; folic acid; systematic review; meta-analysis; homocysteine; dementia; Alzheimer’s disease; nutrition; one-carbon metabolism; B-vitamins; polymorphism; prevention; therapy; homocysteine; vitamin B12; folate; holotranscobalamin; methylmalonic acid; brain volume; grey matter; white matter; amino acids; lactation; methyl donors; periparturient dairy cow; one-carbon metabolism; B-vitamin biomarkers; dietary intakes; vitamin B6; pyridoxal-5-phosphate (PLP); cognition; ageing; fetal programming; maternal diet; methyl donors; myogenesis; one-carbon cycle; pigs; diabetes mellitus; energy intake; epigenetics; folic acid; food-drug interactions; food source; obesity; vitamins B; glutathione peroxidase; one-carbon; pig; pyridoxine; remethylation; transsulfuration; folic acid; voluntary fortification; food composition database; vitamin B12 (cobalamin); lactation; human milk; Canada; Cambodia; pregnancy; cobalamin; vitamin B12; low vitamin B12 status; deficiency; methylmalonic acid; MMA; ethnicity; South Asian; predictor
