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Bacteria in the gut may hold key to many diseases

The trillions of bacteria in your gut affect not just your digestive health but other conditions throughout the body -- everything from heart disease to rheumatoid arthritis. CBS N... More The trillions of bacteria in your gut affect not just your digestive health but other conditions throughout the body -- everything from heart disease to rheumatoid arthritis. CBS News chief medical correspondent Dr. Jon LaPook talks with a leading researcher, Dr. Ilseung Cho, about how these systems interact and whether that could lead to new cures. Less

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