FADS1 and metabolic syndrome: Vegetarians with TT genotype of rs174547 in FADS1 gene had higher odds for MetS (OR: 3.57, 95% CI: 1.02–12.47), larger WC (OR: 4.73, 95% CI: 1.41–15.93), higher BP (OR: 3.17, 95% CI: 1.05–9.61), and lower level of HDL-c (OR: 3.82, 95% CI: 1.22–11.98) compared to vegetarians with CC genotype of rs174547 in FADS1 gene, after the multiple logistic regression models were adjusted for age, sex, and ethnicity.