Digestive Health / Gut Microbiota

Bile acids and pH values in total feces and in fecal water from habitually omnivorous and vegetarian subjects.

Twenty habitually omnivorous subjects and 19 habitually lactoovovegetarian subjects aged 59-65 y collected feces during 4 consecutive days. The concentrations of bile acids in total feces did not differ between the omnivores and vegetarians, but the bile acid concentrations in fecal water were significantly lower in the vegetarians. The concentration of the colorectal cancer-predicting bile acid deoxycholic acid in fecal water was explained by the intake of saturated fat and the daily fecal wet weight (r2 = 0.50). Fecal pH did not differ between the omnivores and vegetarians.

Digestibility of dietary fiber components in vegetarian men.

Digestibility of fiber components namely neutral detergent fiber (total content of cellwall) cellulose, hemicellulose and lignin are estimated in 14 healthy vegetarian men during adlibitum feeding and at 3 energy levels namely 2526, 2868 and 3290 kcals/day. Values of digestibility for adlibitum experiments were 34.17 +/- 2.3 for neutral detergent fiber (NDF), 30.1 +/- 3.9 for cellulose and 53.4 +/- 3.0 for hemicellulose and 8.1 +/- 2.6 for lignin. There was a considerable variability in digestibility of fiber components between individuals

Effect of a lacto-ovo vegetarian diet on fasting small intestinal motility.

BACKGROUND:Changes in diet can alter gastric and small intestinal (SI) motility. The effects of a vegetarian diet on fasting SI motility are unknown. METHODS:Manometric studies were performed in 9 lacto-ovo vegetarians (7 women) and 9 omnivores (7 women) of similar age and body mass index. On each study day, manometry was used to assess SI motility for 5 h, or 3 complete cycles of the interdigestive motor complex (IDMC). Lacto-ovo vegetarians were studied once: omnivores were studied twice, on their usual diet, and after consuming a 14-day lacto-ovo vegetarian diet.

[The influence of vegetarian nutrition on the structure of mucosa in human colon].

Structural and functional peculiarities of digestive tract's wall depending from the character of nutrition (vegetarian or mixed diets) are interpreted in morphology. Proper facts and results of investigations of other authors about morphological structure of tunica mucosa colonic according of type of nutrition are discussed.

Lifestyle-related disease in Crohn's disease: relapse prevention by a semi-vegetarian diet.

AIM:To investigate whether semi-vegetarian diet (SVD) has a preventive effect against relapse of Crohn's disease (CD) in patients who have achieved remission, who are a high-risk group for relapse. METHODS:A prospective, single center, 2-year clinical trial was conducted. Twenty-two adult CD patients who achieved clinical remission either medically (n = 17) or surgically (n = 5) and consumed an SVD during hospitalization were advised to continue with an SVD and avoid known high-risk foods for inflammatory bowel disease.

Adaptive changes of pancreatic protease secretion to a short-term vegan diet: influence of reduced intake and modification of protein.

In our previous study, we demonstrated that abstaining from meat, for 1 month, by healthy omnivores (lacto-ovovegetarian model) resulted in a statistical decrease in pancreatic secretion as measured by faecal elastase-1 output. However, no correlation between relative and non-relative changes of energy and nutrient consumption and pancreatic secretion was documented. Therefore, in the present study, we aimed to assess the changes of exocrine pancreatic secretion with a more restrictive dietetic modification, by applying a vegan diet.

A vegan or vegetarian diet substantially alters the human colonic faecal microbiota.

BACKGROUND/OBJECTIVES:Consisting of ≈10(14) microbial cells, the intestinal microbiota represents the largest and the most complex microbial community inhabiting the human body. However, the influence of regular diets on the microbiota is widely unknown. SUBJECTS/METHODS:We examined faecal samples of vegetarians (n=144), vegans (n=105) and an equal number of control subjects consuming ordinary omnivorous diet who were matched for age and gender.

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