Yogurt is widely used to support the health of the small intestine, primarily due to its content of live probiotic bacteria, such as Lactobacillus and Bifidobacterium species. Scientific studies have demonstrated that these probiotics help maintain the balance of the gut microbiota, which plays a crucial role in the function of the small intestine. Probiotics in yogurt have been shown to improve lactose digestion, reduce symptoms of certain digestive disorders (such as irritable bowel syndrome and antibiotic-associated diarrhea), and may help restore normal gut flora after disturbances such as antibiotic use. A meta-analysis published in the American Journal of Clinical Nutrition (2011) found that yogurt containing live cultures can positively influence gut health and function.

The mechanisms by which yogurt supports the small intestine include enhancement of the intestinal barrier, competitive exclusion of pathogenic bacteria, and modulation of immune responses. While results can vary depending on the specific strains and the health status of individuals, the preponderance of evidence suggests moderate to strong support for yogurt’s benefits for the small intestine. However, not all yogurts contain live probiotics (some are pasteurized after fermentation), so benefits are limited to products with active cultures. Overall, the regular consumption of probiotic-rich yogurt is scientifically validated as supportive of small intestine health.