Duration of juice fasts can vary greatly. Most of the time there is no need to continue fasting after the symptoms causing concern have been eliminated, and this could happen as quickly as one week or take as long as 60 days if the person is very obese. Fasters also lose their motivation once the complaint has vanished. But feeling better is no certain indication that the need to fast has ended. This points up one of the liabilities of juice fasting; the person is already eating, their digestive system never shut down and consequently, it is much easier for them to resume eating. The thing to keep in mind is that if the symptoms return, the fast was not long enough or the diet was not properly reformed after the fast. During a long fast on water or dilute juice, if the body has used up all of it's reserves and/or the body has reached skeletal condition, and the condition or symptoms being addressed persists the fast should be ended, the person should go on a raw food healing diet. If three to six months on raw food don't solve the complaint then another spell of water or dilute juice fasting should be attempted. Most fasters are incapable of persisting until the body reserves have been used up because social conditioning is telling them their emaciated-looking body must be dying when it is actually far from death, but return of true hunger is the critical indicator that must not be ignored. True hunger is not what most people think of when they think they are hungry. Few Americans have ever experienced true hunger. It is not a rumbling in the stomach or a set of uncomfortable sensations (caused by the beginning of detoxification) you know will go away after eating. True hunger is an animal, instinctual feeling in the back of one's throat (not in the stomach) that demands you eat something, anything, even grass or shoe leather. Seriously ill people inevitably start the cleansing process with a pre-existing and serious mineral deficiencies. I say inevitably because they likely would not have become ill had they been properly nourished. Sick fasters may be wise to take in minerals from thin vegetable broths or vitamin-like supplements in order to prevent uncomfortable deficiency states. For example calcium or magnesium deficiencies can make water fasters experience unpleasant symptoms such as hand tremors, stiff muscles, cramps in the hands, feet, and legs, and difficulty relaxing. I want to stress here that fasting itself does not create deficiencies. But a person already deficient in minerals should watch for these symptoms and take steps to remedy the deficiencies if necessary. Raw Food Healing Diets