89 participants (44 men and 45 women) were included in this study, the main objective of which was to assess the gender differences on the lipid profiles and body composition among subjects with metabolic syndrome after a daily walnut intake of 45g during 16 weeks. In males, body protein and basal metabolic rate were significantly higher at week 16 compared to the baseline measurement, even though LDL-cholesterol and total cholesterol levels decreased significantly. In women, waist circumference and triglyceride level were significantly decreased in comparison with the baseline measurements. The study concluded that daily walnut consumption for 16 weeks may increase body protein and decrease the levels of LDL-cholesterol, total cholesterol and apoprotein B among male subjects with metabolic syndrome. Also, daily walnut intake may decrease waist circumstance and triglyceride level among females with metabolic syndrome. Eun-Kyung Song, Hyunjin Park, Yanan Liu and Hyun-Sook Kim. (2017). Daily walnut consumption effects lipid profile and body protein in Korean subjects with metabolic syndrome. The Faseb Journal, 31 no. 1 Supplement 797.15.