There are many different types of digestive disorders, which can range from mildly uncomfortable and temporary, to chronic and even life threatening. The digestive system starts at the mouth and ends at the anus. The digestive tract is a series of connected organs that take in food, digest it, remove the nutrients, and then expel the waste. Although it may sound simple, there is a tightly orchestrated ballet of chemicals, hormones, and other extremely complex interactions that have to happen in a very precise way in order for your body to properly use and excuse the food you eat.