In the long term, the best way to detox is not to avoid eating (although fasting can and is very useful) but to eat foods which will build your organs. Such foods as organ eats are ideal for doing so. However in order to digest this food your gastro-intestinal tract has to be optimum. This is a brief example of how multiple physiological systems are linked in the body. If the digestion isn’t working optimally then detox will be impaired. In this case the digestive system shares common anatomical structures with the elimination system. Everything down to the small intestines are pretty much 100% digestion but in the colon this changes to maybe 70% elimination and 30% digestion.