About 100 trillion bacteria, both good and bad, live inside your digestive system. This population is known collectively as the gut microbiota. Emerging research suggests certain species and strains of gut bacteria can help prevent or treat diseases like rheumatoid arthritis, cancer, and heart disease, as well as help improve mood by lowering levels of stress and anxiety. A balanced, healthy diet that includes high-fiber and fermented foods can help your gut bacteria system thrive.
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