Chemical digestion is one of the six main functions of your digestive system. This system consists of your digestive or gastrointestinal tract and accessory organs. During chemical digestion, your ...

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 ...

An organ is a group of tissues that work together to perform a specific task in the body, such as digesting nutrients or producing chemical messengers that enable brain cells to communicate. Although ...

It’s been 13 years in the making, but Dr. David Sinclair and his colleagues have finally answered the question of what drives aging. In a study published Jan. 12 in Cell, Sinclair, a professor of ...

Science writer Mary Roach chronicles both the history and the latest science of body part replacement in her new book. She ...