Leaving aside the lungs, the three main organs that remove waste and harmful substances are the liver, kidneys, and colon. The colon, or large intestine, is like a self-cleaning oven that has evolved over hundreds of thousands of years. Basically, detoxification means cleansing the blood. This is done by removing impurities from the blood in the liver, where toxins are processed for removal.
The body also removes toxins through the kidneys, intestines, lungs, lymphatic system, and skin during a body detoxification. However, when these systems are compromised, impurities are not properly filtered and the body is adversely affected. A full body detox is a practice that some people believe can flush toxins out of the body. It may involve following a particular diet, fasting, taking supplements, or using a sauna.