Diet Made For Your Specific Blood Type

Advocates of the blood type diets claim an individual's blood type determines the function of his digestive tract. There are four types of blood: A, B, AB and O. It is purported that while one type of food is compatible with one type of blood, it may be lethal for another type of blood, resulting in allergic reactions, a slowed metabolism, chronic fatigue, certain cancers, heart disease and breathing difficulties. Consult with your doctor for diet recommendations before starting a weight-loss program.

Background Information

Diets based on blood type were popularized by Peter D'Adamo, N.D., founder of the Institute of Human Individuality and author of "Eat Right for Your Type: The Individualized Diet Solution to Staying Healthy, Living Longer and Achieving Your Ideal Weight." D'Adamo explains that an individual's blood type serves as a clue to his ancestors' lifestyle and dictates his nutritional needs; however, clinical evidence supporting this claim is severely lacking.

Blood Types

D'Adamo states that an individual's diet should reflect that of his ancestors. According to the theory, individuals with blood type A lived a predominantly agrarian existence and consumed a primarily vegetarian diet. Individuals with blood type B lived a nomadic existence and consumed a primarily omnivorous diet, consisting of dairy and meat products. The ancestral heritage of individuals with blood type O were classified as hunters and gatherers and consumed a diet rich in lean meats, fruits and vegetables. Individuals with the AB combination blood type benefit from a diet abundant in seafood, tofu and dairy products, according to the theory.

Expert Insight

The American Academy of Family Physicians dismisses the Blood Type Diet as a "fad" diet that promises successful weight loss but may result in failure. Furthermore, engaging in a diet that is not backed by science may prove harmful to your health. AAFP recommends a nutritious eating plan along with regular physical activity for effective weight loss and maintenance. The U.S. Department of Agriculture suggests a healthy balance of macronutrients based upon level of activity, health condition, age and sex, rather than ancestral blood type.

Considerations

Rather than succumbing to a "fad" diet for weight loss, consult with your doctor regarding your medical history or health concerns to devise a weight-loss plan. Your physician may recommend supplements if she discovers your diet is lacking in certain nutrients. Restrict unhealthy fats, such as saturated fats, sodium, and sugars from sweetened beverages or snack items. Incorporating exercise into your daily routine will help to drop excess weight and promote overall health. AAFP suggests a minimum of between 30 and 60 minutes of physical activity on four to six days each week.