Though not all participants met the criteria for MetS, serum carnitine levels (not taking L-C supplements) were associated with components of MetS: serum triglycerides (r = 0.13) and serum insulin (r = 0.12) in males with normal fasting glucose and with serum triglycerides (r = 0.14) in hyperglycemic males. The gene discussed is INS; the disease is metabolic syndrome.