Your intestines play a significant role in overall health. Along with your lungs, skin, and kidneys, your bowels eliminate bodily toxins. At the same time, once the food you eat reaches your intestines, villi (small, fingerlike projections on intestinal walls) absorb nutrients and deliver them to the rest of your body.
The practice of detoxifying or cleansing by cultures all around the world for centuries – including Ayurvedic and Chinese medicine systems. Many religious groups have historically used fasting as a way of purifying the spirit and Hippocrates recommended fasting to improve health.