Blood type diet is a kind of diet proposed by Peter DeDamon. Peter DeDimon (Peter D&; #39; Adao) is a famous naturopath in Connecticut. Elected as 1990 naturopath by American Natural Medicine Association. His diet provides different diets for different blood types. This diet claims to reduce weight, slow down aging and prevent cancer and heart disease. De Damon also published the book Eat the Right Blood Type to illustrate this point.