When it comes to seeking optimal health, Dr. Gerard Mullin suspects the average person knows more about how the cardiac system works or how the brain functions than he or she knows about the complex ...

For all our talk about food, we don't like to think much about it after we put it in our mouths. But Mary Roach — whose latest book is Gulp: Adventures on the Alimentary Canal — did just that. Gulp ...

What's the Digestive System? Your digestive system is a group of connected organs that work together to turn the food you eat into nutrients your body needs to function. It includes your biliary ...