Study finds no evidence that vegan diet benefits specific blood type

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ISLAMABAD, December 15 (online): Proponents of the blood type diet claim that people with type A blood benefit most from a vegan diet. However, a new study found no link between diet and blood type. The researchers instead suggest that plant-based diets are beneficial for people of all blood types.
When looking at cardiometabolic factors, or a person’s chance of stroke, diabetes, and heart disease, the findings of a 2014 study did not support tailoring diets to blood types.
Although the results did show that people on the Type A diet — which involves eating high amounts of grains, fruits, and vegetables — had a lower body mass index (BMI) and waist circumference, as well as reduced blood pressure, cholesterol, and fat, these improvements in risk factors were not dependent on blood type.
Despite insufficient evidence to support blood type diets, some people believe that catering to blood type can lower disease risk.
The trial recruited a total of 244 adult men and women from Washington, D.C., with a BMI between 28 and 40. None of the participants had a history of diabetes, drug abuse, pregnancy, or lactation, and none were currently on a vegan diet.
The researchers assigned half of the participants to follow a strict, low fat vegan diet, while the other half did not make any changes to their diet. The participants self-reported what they ate during the 16-week trial.
The vegan group also attended weekly classes on dietary information, which health professionals led. The researchers advised all of the participants to continue their regular exercise habits.
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