Type A History
The Type A emerges into the 21st century with many more complex challenges than their ancestors could have imagined. 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. Having exhausted the great game herds of Africa, humans pushed farther out from their ancestral home into Europe and Asia. The cultivation of grains and livestock changed everything. For the first time, people were able to forego the hand to mouth lifestyle of the hunter/gatherer and establish stable communities. Over time the adaptations that produced Blood Type A were based on the need to fully utilize nutrients from carbohydrate sources. These biological adaptations can still be observed today in Type A's digestive structure. Low levels of hydrochloric acid in the stomach and high intestinal disaccharide digestive enzyme levels permit the more efficient digestion of carbohydrates. According to Dr. 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.
What Makes Type A Unique
Many neurochemical factors in the Type A genetic disposition favor a structured, rhythmic, harmonious life, surrounded by a positive, supportive community. The harried pace and increased sense of isolation experienced by so many in today's society often make these needs difficult to achieve. Type A best exemplifies the powerful interconnections between mind and body. This was vital to the shift away from hunting and procurement to building and growing. However, Type A's more internalized relationship to stress, which served your ancestors well, can be a challenge for the modern Type A. The Blood Type Diet's proactive mix of lifestyle strategies, hormonal equalizers, gentle exercise and specialized dietary guidelines will maximize your overall health; decrease your natural risk factors for cancer, diabetes and cardiovascular disease. The result: high performance, mental clarity, greater vitality and increased longevity.
Once you eliminate the toxic foods from your diet. Many people find it difficult to move away from the typical meat and potato fare to soy proteins, grains and vegetables. But it is particularly important for sensitive Type As to eat their foods in as natural a state as possible: pure, fresh and organic. "I can't emphasize enough how this critical dietary adjustment can be to the sensitive immune system of Type A. With this diet you can supercharge your immune system and potentially short circuit the development of life threatening diseases."
In this busy, ever changing world, it's almost impossible to avoid every day stress. Type As have a naturally high level of the stress hormone cortisol and produce more in response to stressful situations. Cortisol is released in 24-hour patterns, typically in the early morning between six and eight A.M. with a gradual decrease during the day. It helps to cue the body's other cyclical rhythms. Due to the naturally elevated cortisol in type As, additional stress often manifests in several ways; disrupted sleep patterns, daytime brain fog, increased blood viscosity (thickening), and promotes muscle loss and fat gain. In extreme cases in Type As, stress can manifest in more serious ways, causing obsessive-compulsive disorder, insulin resistance and hypothyroidism. To help balance cortisol levels, Dr. D'Adamo recommends that you limit sugar, caffeine and alcohol. Don't skip meals, especially breakfast; eating smaller, more frequent meals will also help to stabilize blood sugar levels. He also points out that the following factors are known to increase cortisol levels and increase mental exhaustion for Type As - be aware and limit your exposure when possible: