Methods: 93 male subjects (age 16 - 78 years) had been vegetarian diet for 5 to 65 years, and 86 non-vegetarian men (age 17 - 72 years) were control group They were screened for insulin resistance (fasting insulin levels and HOMA-IR) and cardio-vascular risk factors including BMI, WC, blood pressure, fasting glucose, HbA1c, lipid profile, serum levels of hsCRP and metabolic syndrome.