Personalising diets can be the best way to achieve the best results. But, can personalising a diet be made as simple as checking your blood type?
Some people seem to think so!
The blood type diet dates back to the 1960s – a product of the work of “naturopathic” physician Peter J. D’Adamo. The overall concept of the diet is that if we eat according to our blood type, we will be healthier and happier.
How Does it “Work”?
The theory behind the diet is in the following:
1. Because our blood type is inherited, it must also be connected to how our genes interact with foods.
2. Therefore, according to D’Adamo, it makes sense to eat in a way that matches your blood type.
3. This is suggested to optimise your health, as your body has evolved to process these foods efficiently.
4. D’Adamo also proposes that foods which are not fit for your blood type may be harmful and cause red blood cells to “clump together”, thus increasing the chances of disease.
Eating for Your Blood Type
When it comes to eating for your blood type, it’s about sticking to what D’Adamo calls “beneficials”. These are described as molecules found in food; of which certain kinds are better for each blood type. In general, the diet is very restrictive and there are only a few foods which can be consumed on each diet.
Here is what he proposes for each blood type:
Blood Type O – Consume a high-protein diet of predominantly animal origin.
Blood Type A – Consume mostly fruits, vegetables, whole grains, beans, and legumes. Some animal products are allowed, including chicken, turkey, and seafood.
Blood Type B – Steer clear from corn, buckwheat, tomatoes, and peanuts, as well as chicken. Instead, consume eggs, certain meats, vegetables, and low-fat dairy.
Blood Type AB – Eat tofu, seafood, green vegetables, and dairy, as well as avoiding consumption of caffeine, alcohol, and smoked meats.
Does It Work?
While the blood type diet claims to improve conditions such anxiety disorders, diabetes, cancer, and cardiovascular disease, there is absolutely no scientific evidence to support this.
Scientists have looked into this diet, and found that there is no scientific reason, or indeed any evidence, to suggest that blood type has any association whatsoever with specific foods.
There is also no evidence to suggest that the genes which determine our blood type have anything to do with the other genes that affect how we process foods.
Nor is there any logical or scientific explanation as to how different foods may cause red blood cells to “clump together”.
Not to mention, this diet is highly restrictive. This may increase the risk for a wide number of nutrient deficiencies. For example, if you are blood type O, you would be recommended to eat predominantly animal-based foods and avoid grains and lentils. This would be an incredibly unbalanced diet and lose many of the known benefits of plant foods.
The diet may lead to weight loss due to restricting large numbers of foods, but it would not do so in a healthy or balanced way. Some of the diets (particularly for type O) may actually increase the risk of health complications!
In a Nutshell
It has been proposed that the blood type diet may contribute to weight loss as well as a number of other benefits. However, there is absolutely no science that backs up the claims that the diet makes. Additionally, following the diet may lead to nutritional deficiencies, due to its restrictive nature.