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Your gut is an amazing place. The special layer of cells that line the inside of your small and large intestines take nutrients and water from what you eat while keeping anything bad out of your system. This layer is called the intestinal epithelium. It actually renews itself every four to seven days using stem cells. These are special types of cells that can self-renew by dividing and differentiating to produce other types of cells to renew your organs. Scientists still don’t know how exactly they make this decision, or what defines stem cells. Bernat Corominas-Murtra, formerly a postdoc at the Austrian Institute of Science and Technology (ISTA) and now an assistant professor at the University of Graz, and Edouard Hannezo, professor at ISTA, in collaboration with an international experimental research group led by Jacco Van Tim Rheenen in Amsterdam studied cells stems in the intestinal epithelium. They discovered an exciting new mechanism that could change our understanding...

Your digestive system is full of trillions of microorganisms, which affect your health. (Photo: Getty Images) Right now, your digestive system is teeming with bacteria, fungi, viruses, and even parasites — all part of the gut microbiome, playing a bigger role in your health than you might think. It might sound a bit worrying that trillions of microorganisms call your gut if you grew up thinking all germs are bad. However, there are some “good” ones that actually protect your body from illness and disease. Mahmoud Ghannoum, a microbiome researcher and professor in the department of pathology at Case Western Reserve University, told Yahoo Life that the gut thrives on a wide variety of microbial species. If one type of bacteria can’t do its job, another species can step in and help. Ghannoum compared the diversity of the gut microbiome to that of diverse human societies. Each element has its own role, but everyone works together to keep society moving forward. A less...