Blood group diet – what you need to know

We all need to know our Blood Type when we fill out hospital forms and even the forms to get a driving license. But does your blood group only come into play in case of blood transfusions and ascertaining you and partner have a matching Rh factor when you want to get pregnant? Not if you are to believe the Blood Group Diet that theorizes knowing your blood type and eating a diet specifically designed for it can greatly benefit your health and well-being as well!


Introduction to the Blood Group Diet

Your blood type may decide your susceptibility to diseases, your body’s natural response to stress, and the way to body reacts to food and a lot more. When it comes to nutrition, a one-size-fits-all approach is highly redundant. Different people have different nutritional needs, and the key may very well lie with each person’s blood group. The Blood Group Diet recommends an individualized nutritional diet for every person so they can choose the best foods for weight loss, boosting immunity, reducing inflammation and decreasing susceptibility to certain diseases.

The Blood Group Diet theorizes that your blood type plays a role in:

  • The way you handle stress; people with Type A blood have a higher level of cortisol in their body, while people with Type O suffer from overproduction of adrenaline in a stressful situation.
  • Your susceptibility to diseases; people with Type O are more susceptible to stomach ulcers and those with Type AB or B are at high risk to pancreatic cancer.
  • Your gut bacteria are also linked to blood type; people with Type O store more carbs as fat while those with Type A process carbs much more efficiently.
  • Different blood groups react to food in different ways, thanks to Lectins that have agglutinating properties and affect both the blood as well the inner lining of the digestive tract.


Is There Any Merit In This Theory?

Well, as with most fad diets, the Blood Group Diet is also marred by controversy. Many dieticians and nutritionist and health specialists do not approve this theory, as they believe evolution has long ago severed all links between blood type and diet. The concerns all seem genuine, since the blood type diet does seem to be quite restrictive, and scientific studies have found no evidence to support this diet.

For example, the Blood Group Diet theorizes that people with Type O (which happens to be the most common blood group) follow a high protein-low carb diet like their hunter/gatherer ancestors with no dairy. Those with Type A (second most common blood type) should follow the lifestyle of their farming ancestors and stick to a predominantly vegetarian diet. People with Type B have almost no dietary restrictions, thanks to their nomadic ancestors, while those with Type AB are best served by a diet that is combination of diet recommended for Type A and Type B, namely – largely vegetarian diet with a little bit of meat.

As you can see, these recommended diets are restrictive, and may result in poor nutrition over a period of time.