Detox diet is a term used to describe diets that are regarded by some as having detoxifying effects upon the body by removal of toxins or other contaminants. Proponents offer claims detox diets improve health, energy, vitality, resistance to disease, mental state, digestion, as well as aid in weight loss. Scientists, dietitians, and doctors, however, while generally agreeing 'detox diets' to be harmless (unless nutritional deficiency results), often dispute the value and need of 'detox diets' due to lack of supporting, factual evidence. 'Detox' diets usually suggest that water, or fruits and vegetables compose a majority of one's food intake. Limiting this to unprocessed (and sometimes also non-GM) foods is often advocated. Limiting or eliminating alcohol is also a major factor, and drinking more water is similarly recommended. Methods to modify the diet for the purpose of detoxification include: Some proponents of detox diets emphasize it as a lifestyle rather than a diet.