NODE SMITH, ND Our gut microbiome -- the ever-changing "rainforest" of bacteria living in our intestines -- is primarily affected by our lifestyle, including what we eat or the medications we take, most studies show. But a University of Notre Dame study has found a...

NODE SMITH, ND The human body is essentially made up of trillions of living cells. It ages as its cells age, which happens when those cells eventually stop replicating and dividing. Scientists have long known that genes influence how cells age and how long humans...