The logistic regression analysis also revealed that vegetarians with TT genotype of rs174547 in FADS1 gene had higher odds (OR: 3.57 95% CI: 1.02-12.47) of developing MetS than vegetarians with CC genotype of rs174547 in FADS1 gene after adjusting for age, sex, and ethnicity. This evidence concerns the gene FADS1 and metabolic syndrome.