The Blood Type Diet is based on a theory that people with certain blood types benefit from eating, or not eating, certain types of foods. For more information on the Blood Type Diet, read on.

The content in this page is not a substitute for professional medical advice. Please contact your doctor before using the information presented here.

• In 1999, naturopathic physician Peter D'Adamo released Eat Right 4 Your Type—a book which outlines an eating plan based on a person's blood types. D'Adamo claims that by following his plan of eating certain foods based on your blood type, you can lose weight and improve overall health.

• The basic idea of the Blood Type Diet, according to D'Adamo, is that "you are what you eat." D'Adamo believes that by following an eating plan designed specifically for your blood type, you can:

1. Lose weight
2. Improve digestive function
3. Reduce stress
4. Improve mental clarity
5. Boost energy levels

• According to the Blood Type Diet, those with type O blood can boost metabolism by eating:

1. Lean meats
2. Poultry
3. Fish

• Type O's, who make up roughly 46% of the population, are told to restrict:

1. Grains
2. Breads
3. Legumes
4. Beans

(Creative Commons photo by Camra Art)

• The Blood Type Diet advises that type A's, who make up about 39% of the population, consume a primarily vegetarian diet consisting of:

1. Soy proteins
2. Grains
3. Organic vegetables

• D'Adamo's Blood Type Diet indicates those with type B blood—about 11% of the population—should consume:

1. Low-fat dairy
2. Meat
3. Produce

• According to the diet, type B's should avoid:

1. Wheat
2. Corn
3. Lentils

• Those with type AB blood following the Blood Type diet should consume:

1. Seafood
2. Tofu
3. Dairy
4. Most produce

• They should avoid:

1. Chicken
2. Beef
3. Pork

• Introduction
• Step 1: What Is the Blood Type Diet?
• Step 2: Type O Diet
• Step 3: Type A Diet
• Step 4: Type B Diet
• Step 5: Type AB Diet