Recently, an American "naturopathy" expert proposed a novel scientific theory: creating a diet based on blood type can achieve the goals of health and fitness, as a person's blood type determines how their body utilizes ingested food. For example, the Inuit and certain Native American tribes, whose diet is primarily meat with little consumption of fruits and vegetables, rarely suffer from cardiovascular diseases and cancer. One of the primary reasons is that they are mostly O-type blood. No blood type is superior, but blood types do directly or indirectly affect a person's health to varying degrees.
O-type blood: Can achieve health and weight control by consuming lean meat, animal liver, seafood, and green leafy vegetables. However, foods like corn, grains, cabbage, and potatoes are not effective for weight loss. People with O-type blood are best suited for focused, one-shot weight loss methods, such as engaging in recreational weight-loss activities.
A-type blood: Is suited for a diet primarily composed of vegetables. Certain plant proteins, such as soy protein, are relatively healthy foods for them. Regular consumption can reduce the incidence of cardiovascular diseases and cancer, while also being beneficial for overall health. The best weight loss method for people with A-type blood is to control their diet while engaging in moderate exercise.
B-type blood: Is well-adapted to meat and dairy products, but a diet consisting only of chicken, corn, tomatoes, and most nuts and seeds is not conducive to health. The best weight loss method for people with B-type blood is to induce them to lose weight voluntarily.
AB-type blood: Is suited to both animal and plant proteins. The digestive system is sensitive, so the diet should be based on small, frequent meals. Fish, beans, green leafy vegetables, and dairy products are their healthy foods.