Which blood type diet recommends avoiding grains?

The blood type diet, developed by Dr. Peter D'Adamo, suggests that individuals with blood type O thrive on a diet that resembles that of our ancient ancestors, which consisted primarily of protein-rich foods such as meat and fish. This dietary blueprint is based on the idea that blood type O individuals have a more optimized digestive system for processing animal proteins and that their bodies may not handle grains and legumes as effectively.

In the context of the blood type diet, people with type O are advised to minimize or avoid grains entirely. This is rooted in the belief that grains can potentially cause digestive issues for type O individuals, leading to inflammation and weight gain. In contrast, other blood types, such as A, B, and AB, have been associated with a more varied diet that can include grains, dairy, and different types of carbohydrates, reflecting their supposed evolutionary dietary adaptations.

Those with blood type O are encouraged to consume a high-protein diet rich in lean meats, fish, vegetables, and fruits, while steering clear of grains to optimize their health and well-being according to this dietary theory.