Many neurochemical factors in the Type A genetic disposition favor a structured, rhythmic, harmonious life, surrounded by a positive, supportive community. D'Adamo, these are also the very factors, along with low levels of intestinal alkaline phosphatase, that make it difficult for Type As to digest and metabolize animal protein and fat. Low levels of hydrochloric acid in the stomach and high intestinal disaccharide digestive enzyme levels permit the more efficient digestion of carbohydrates. These biological adaptations can still be observed today in Type A's digestive structure. Over time the adaptations that produced Blood Type A were based on the need to fully utilize nutrients from carbohydrate sources. For the first time, people were able to forego the hand to mouth lifestyle of the hunter/gatherer and establish stable communities. The cultivation of grains and livestock changed everything. Having exhausted the great game herds of Africa, humans pushed farther out from their ancestral home into Europe and Asia. The key factor in the development of Type A can be traced to the struggle for survival long ago, when there was a rapidly dwindling supply of hunting game stock. The Type A emerges into the 21st century with many more complex challenges than their ancestors could have imagined.

Read on to learn more about the Type A individual. D'Adamo, author of the best selling books Eat Right for Your Type and Live Right for Your Type, among others, gives us a blueprint for living in his books. Some believe that personality is influenced by blood type! Dr. People who are A blood type have a different set of characteristics than people who are Type O - they are susceptible to different diseases, they should eat different foods and exercise in a completely different manner. The genetic information that resulted in their particular characteristics has been passed on to you. Even though you are living in the 21st century, you share a common bond with your ancestors. The key is genetic heritage - the story line of your life. It is also central to our exploration of blood types. This is the question that is at the heart of the genetic puzzle.

The blood type diet o negative