Type AB
According to Dr. D’Adamo, Type AB’s have low stomach acid but an adaptation to meats, so they lack enough stomach acid to metabolize meat efficiently, and it ends up being stored as fat. Those with Type AB blood type should avoid caffeine and alcohol, especially when in a stressful situation. Dr. D’Adamo recommends foods such as tofu, dairy, and green vegetables for weight loss. “Avoid all smoked or cured meats,” he adds. “These foods can cause stomach cancer in people with low levels of stomach acid.” Smaller, more frequent meals can counteract digestive problems in Type ABs.
Type O
Dr. D’Adamo explains that Type O’s tend to have a higher level of stomach acid, and they have a well-developed ability to digest meals that contain both protein and fat, which allows them to digest animal products more efficiently. It is suggested that Type O’s stay away from simple carbohydrates, especially from grains, as they are more easily converted into fats and triglycerides. Instead, Dr. D’Adamo suggests that those with a Type O blood type focus on vegetables and fruits, while avoiding wheat, dairy, caffeine, and alcohol. Any meats consumed should be lean, organic, and humanely raised.