Probiotics—the good bacteria that live in your gut and that are also found in yogurt and dietary supplements—have been shown in a variety of studies to improve digestion, but new research shows they can do much more. A study published in January 2012 in the FASEB Journal found that boosting the good bacteria in your intestines can help reduce the risk of death from heart attacks. Researchers at the Medical College of Wisconsin divided rats into three groups. The first group w