FADS1 and metabolic syndrome: MetS, Metabolic syndrome; SNPs, single nucleotide polymorphisms; BMI, body mass index; SCD1, steroyl-CoA desaturase; D5D, delta-5 desaturase; FAs, fatty acids; CE, cholesteryl ester; AST, abdominal skinfold thickness; FBG, fasting blood glucose; TG, triglycerides; HDL-C, high-density lipoprotein cholesterol; LDL-C, light-density lipoprotein; ApoB, apolipoprotein B. *See Figure S1, ** Only significant predictors (P < 0.05) were used in the final version of the serum lipids and lipoproteins model.