title: Bile acids, neutral steroids, and bacteria in feces as affected by a mixed, a lacto-ovovegetarian, and a vegan diet.
abstract: In a metabolic ward 12 healthy male subjects consumed mixed Western (M), lacto-ovovegetarian (L), and vegan (V) diets in a randomized order for 20 d each. The concentrations of deoxycholic acid, isolithocholic acid, and total bile acids in 4-d composites of feces on the L and V diets were significantly lower than on the M diet. The chenodeoxycholic-to-isolithocholic plus lithocholic acid ratio was significantly higher on the V diet. The concentrations of coprostanol and of coprostanol plus cholesterol were highest on M diet and lowest on V diet. The number of fecal lactobacilli and enterococci on the V diet was significantly lower than on the M or the L diets. This study showed a decrease in the concentration of fecal (secondary) bile acids by the L and the V diets and an alteration of the fecal flora composition by the V diet.
mesh_terms: D000328:Adult; D000818:Animals; D001419:Bacteria / Q000302:isolation & purification; D001647:Bile Acids and Salts / Q000032:analysis*; D004083:Cholestanol / Q000032:analysis; D002784:Cholesterol / Q000032:analysis; D003840:Deoxycholic Acid / Q000032:analysis; D014676:Diet, Vegetarian; D004531:Eggs; D005243:Feces / Q000032:analysis* / Q000382:microbiology; D006801:Humans; D008095:Lithocholic Acid / Q000032:analysis; D008297:Male; D008892:Milk; D012855:Sitosterols / Q000032:analysis; D013256:Steroids / Q000032:analysis*
chemical_list: D001647:Bile Acids and Salts; D012855:Sitosterols; D013256:Steroids; D003840:Deoxycholic Acid; C025473:gamma-sitosterol; D008095:Lithocholic Acid; D004083:Cholestanol; D002784:Cholesterol