Probiotics are live microorganisms that, when administered in adequate amounts, confer health benefits to the host. They primarily consist of bacteria from genera such as Lactobacillus and Bifidobacterium, and are commonly found in fermented foods and dietary supplements.
Probiotics help balance the gut microbiota by inhibiting pathogenic bacteria and promoting beneficial bacteria.
Probiotics modulate the immune response by enhancing the activity of certain immune cells and promoting anti-inflammatory cytokine production.
Probiotics strengthen the intestinal barrier by increasing mucin production and enhancing tight junction integrity.
Probiotics produce substances like bacteriocins and organic acids that inhibit the growth of harmful bacteria.
Probiotics influence the gut-brain axis by producing neurotransmitters like serotonin and GABA, potentially affecting mood and behavior.
| Compound | Benefit | Evidence | Confidence |
|---|---|---|---|
| Lactobacillus rhamnosus GG | Reduction of acute diarrhea duration | strong | 90% |
| Bifidobacterium animalis subsp. lactis BB-12 | Improvement of bowel regularity | moderate | 80% |
| Saccharomyces boulardii | Prevention of antibiotic-associated diarrhea | moderate | 80% |
Comprehensive overview of probiotics, including mechanisms and health benefits.
Detailed review of probiotic mechanisms of action.
Discusses probiotic mechanisms, health benefits, and applications in food.