Dietary fiber and lifestyle influence serum lipids in free living adult men.

Objective: The aim of this study was to determine the effect of dietary fiber consumption and lifestyle on serum lipids in adult men with non-restricted diet and physical activity.Methods: Two groups of 19 men were classified as high (48 g/day) and low fiber groups (27 g/day). Anthropometry, food frequency, daily weighed intakes and physical activity were done for a seven-day period. Fasting blood was collected and serum was analyzed for triglycerides, total cholesterol and lipoprotein cholesterol fractions.Results: Crude correlation coefficients showed that total cholesterol was negatively associated with physical activity, total dietary fiber and P/S ratio (r = −0.52; p < 0.001, r = −0.44; p < 0.01, r = −0.51, p < 0.001). LDL-C was also correlated negatively with total dietary fiber and P/S ratio (r = −0.34, p < 0.03; r = −0.53, p < 0.01). It was also positively associated with dietary cholesterol and body weight (r = 0.34, p < 0.03; r = 0.31, p < 0.05). Serum triglycerides had an inverse association wi...