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Q:

Have u ever heard of a diet method regarding blood type? It suggests blood type O can't digest or absorb carbohydrate well while eating lots of meat won't make you put on weight. Is that true or just a myth? Thank you very much.

Sent in by Ben W, on 14-Sep-2011, under Nutrition.

A:

This type of diet was made popular by the book “Eat Right for Your Type” by Peter J. D’Adamo. The diet’s premise is that people require a specialized diet plan based on their blood type - O, A, B, or AB. D’Adamo’s belief is that your blood type determines which foods makes you gain weight, and which is beneficial to your health. His hypothesis is based on an idea of genetic inheritance from our ancestors.

After conducting some research on this diet approach, and from personal experience, I don’t believe this diet works or is even very safe. According to many physicians, the blood type diet lacks scientific evidence to backup the theory. Studies that have been done on this subject have been inconclusive. Furthermore, the book lacks references and evidence on their claims.

From personal experience, as a Type O, on this diet I’m recommended to eat a lot of meat products and avoid carbs such as wheat at all cost. I don’t like meat, nor does it make me feel good. I’ve been mostly vegetarian for the last year and I feel so much healthier than I did when I was eating meat. My digestion is much better and I feel lighter. Conversely, I know several people with blood type A, who can’t live a day without meat, although the diet recommends vegetarianism for them.

The blood type diet does not take into consideration people’s individual preferences, tastes, allergies, and intolerances. Perhaps the reason why some people may loose weight on this diet is because, as with any diet, it requires you to cut out some food groups, thereby limiting your choice and making you consume less. At the end of the day I still believe loosing weight is all about calories - not what you eat specifically. Of course choosing to eat less fat, sugar and processed foods will help with weight loss. But don’t cut anything out that has nutritional benefits for everyone’s body.

Keep these basic guidelines when dieting: listen to what your body wants and needs, eat fresh organic whole produce whenever possible, and keep everything in moderation.






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