Feature Archive

Food for Your Blood?

Eating by blood type.

WebMD Feature

July 24, 2000 -- When Michelle Murdock and her husband sit down for dinner together, they never eat the same meal. While she doesn't eat meat, her husband eats it often. She loves peanut butter; he avoids it. She shies away from dairy products, while he consumes all the milk and cheese he wants. Why do their menus vary so widely? It's not because they have different tastes -- rather, they have different blood types. (Hers is type A; his is type B.)

The Murdocks follow the "Eat Right for Your Type" diet, which encourages people to consume certain foods and shun others based on their status of A, B, AB, or O. Michelle, 29, has been on the diet for almost two years and is still enthused. "I lost about 35 pounds the first year I was on it," she says. ''I have since maintained a healthy weight." She says she has the energy of a teenager.

Who'd think a diet would be based on blood type? The theory is the brainchild of Peter J. D'Adamo, ND, a naturopathic physician in Stamford, Conn., who touted the program in his 1996 book, Eat Right for Your Type, which gave the diet its name. Eating this way can not only keep you healthy and help you lose weight, D'Adamo says, but not eating this way can harm you, perhaps setting you up for digestive problems or serious ailments, including cancer. Not everyone agrees with D'Adamo -- the diet is roundly criticized by most mainstream nutritionists and medical doctors for the lack of published evidence showing it works.