The Microbiome and Cancer: How Gut Bacteria Influence Tumor Growth The human body is home to trillions of microorganisms that live on the skin, in the mouth, and especially in the digestive tract. Collectively, these microbes are known as the microbiome. The gut microbiome contains thousands of species of bacteria that play essential roles in … Continue reading The Microbiome and Cancer: How Gut Bacteria Influence Tumor Growth