You may understand the respiratory and digestive systems as separate entities but, in many ways, the two are intimately connected. For example, breathing provides oxygen to help your digestive tract ...

This film explores the complex process of human digestion, detailing how food is broken down into molecules by the digestive system. It follows the journey of food from the mouth, where it is chewed ...

New research finds there is significant variation in the anatomy of the human digestive system, with pronounced differences possible between healthy individuals. The finding has implications for ...

Your liver is essential to your good health. The liver is an important part of the digestive system. It performs more than 300 different function in the human body. Learn more about the liver.

Your gastrointestinal (G.I.) system, the key player in your overall digestive health, is one of the most important systems in your body. It consists of the mouth, esophagus, stomach, small intestine, ...

Your body’s biliary system encompasses your bile ducts, gallbladder, and the associated digestive structures. This system works together to move bile, also called digestive fluid, through your system ...

Using new technology, researchers at UC Davis and Stanford University are able to study microbes and metabolism in different parts of the human digestive system for the first time. (Getty Images) Most ...

There's rarely time to write about every cool science-y story that comes our way. So this year, we're once again running a special Twelve Days of Christmas series of posts, highlighting one science ...

Your personal food-processing plant is like a symphony orchestra: When all the parts perform well, the result is beautiful music that simply flows. Should one or two musicians space out or be unable ...

When it comes to gut health, one of the most important, and also overlooked, is gut transit time. This factor determines how long food takes to travel through the digestive tract. Although there are ...