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Yogurt and gut function.

Oskar Adolfsson1, Simin Nikbin Meydani, Robert M Russell

  • 1Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, 711 Washington Street, Boston, MA 02111, USA.

The American Journal of Clinical Nutrition
|July 28, 2004
PubMed
Summary
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Yogurt and its lactic acid-producing bacteria (LAB) show potential benefits for various gastrointestinal conditions. Further research is needed to confirm these promising health effects in humans.

Area of Science:

  • Gastroenterology
  • Microbiology
  • Immunology

Background:

  • Yogurt contains lactic acid-producing bacteria (LAB), such as Lactobacillus and Streptococcus species.
  • LAB and yogurt have been investigated for their effects on gastrointestinal health.
  • Previous studies explored benefits in animal models and some human subjects.

Purpose of the Study:

  • To review the health effects of yogurt and LAB on gastrointestinal conditions.
  • To explore the mechanisms behind yogurt's potential benefits.
  • To identify areas for future research.

Main Methods:

  • Literature review of studies on yogurt and LAB.
  • Analysis of research in animal models and human subjects.
  • Examination of reported health benefits for specific gastrointestinal conditions.

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Main Results:

  • Yogurt and LAB show promise for lactose intolerance, constipation, diarrhea, colon cancer, inflammatory bowel disease, Helicobacter pylori infection, and allergies.
  • Potential benefits are linked to gut microflora modulation, improved bowel transit, and enhanced immune responses.
  • Inconsistent results exist due to variations in LAB strains, administration, and study designs.

Conclusions:

  • Yogurt consumption may benefit patients with various gastrointestinal issues.
  • Further well-designed, controlled human studies are necessary to validate these findings.
  • Standardization of research methods and clear definitions of gut health are needed.