Study Finds Blood Type Diets Don’t Provide Previously Reported Benefits
The blood type diet is based on your blood type. According to this diet, if your blood type is A, you should eat vegetarian foods, if it is type O, you should eat mostly meat and not eat grains, and if it is type B, you can eat many types of food, such as dairy, which you cannot eat for type A and O. A new study has found that a low-fat, plant-based vegan diet is equally beneficial for all blood types.
Participants in the study included 244 overweight adults with no history of diabetes. Half of them were assigned to consume a low-fat vegan diet for 16 weeks and attend weekly educational classes to help them adhere to the diet. The other half consumed their regular diets. Body weight, BMI, fat mass, blood lipid levels, and fasting plasma glucose levels were measured at baseline and at the end of the study period.
The researchers found that there were no significant differences in any of the outcomes measured between different blood types. In fact, they found that participants of all blood types benefitted from the low-fat vegan diet. In addition, no evidence was seen that a diet heavy in meat was beneficial for any blood type.
The study was conducted by researchers from the Physicians Committee for Responsible Medicine.It was published online ahead of print on December 4, 2020 in the Journal of the Academy of Nutrition & Dietetics.