Final answer:
Probiotics have been extensively studied for their ability to reduce diarrhea by various factors. They can help reduce the duration and severity of diarrhea caused by antibiotics, infections, and irritable bowel syndrome (IBS). Additionally, probiotics promote healing of the small intestines for people with celiac disease, preventing diarrhea caused by gluten intolerance.
Step-by-step explanation:
The most extensively studied benefit of probiotics is on the reduction of diarrhea. Probiotics are live bacteria and yeasts that are good for our health, especially our digestive system. They can help reduce the duration and severity of diarrhea caused by various factors, including antibiotics, infections, and irritable bowel syndrome (IBS). For example, some strains of probiotics, such as Lactobacillus rhamnosus GG and Saccharomyces boulardii, have been shown to reduce antibiotic-associated diarrhea significantly. Additionally, probiotics can promote healing of the small intestines in people with celiac disease, preventing diarrhea caused by gluten intolerance.