The digestive system is the series of tubelike organs that convert our meals into body fuel. There are about 30 feet (9 meters) of these convoluted pipeworks, starting with the mouth and ending ...

Teeth are made of enamel, calcium, and other substances. This article defines key terms to help you understand how teeth fit ...

After blood leaves your digestive tract and flows into your liver, the liver gears up to process a wide variety of dangerous chemicals in your bloodstream. The cells that process these toxins ...