Type O is the oldest blood type and originated when being an aggressive predator was essential for survival. Because of this instinctual response there is a tendency to produce higher levels of noradrenaline and adrenaline during stress. This is called the “fight or flight” response that is heighted in Type O. The Type O metabolism is designed for efficient use of calories and the digestive tract is geared to produce high levels of stomach acid and intestinal enzymes. This is why high protein diets tend to be more beneficial and easily tolerated by Type O. While animal protein is utilized easily, the lectins in certain grains, breads, legumes, and beans tend to increase body fat. The worst offender for weight gain is wheat products.
Specific conditions that occur in Type O include Syndrome X and blood-clotting disorders. Syndrome X in a condition created by the combination of obesity, high triglycerides, and insulin resistance. The biggest trigger food for these conditions is the consumption of carbohydrates. Since the Type O history leans on a hunting type mentality, it is no surprise that high protein and vegetables are part of the beneficial food list. Carbohydrates from grains were not native to Type O. Indigenous cultures of Africa, for example, were not exposed to grains as breads until the introduction of European and Westernized foods.
Blood clotting disorders result because Type O’s tend to lack the chemical responsible for blood clotting. The term “thin blood” describes a serious problem when there is a wound or surgical procedure. Vitamin C, and A are good for wound healing while vitamin K is helpful for blood clotting. Additional precautions include avoiding aspirin and blood thinners such as gingko biloba and garlic before surgery. Women with Type O blood should avoid using birth control pills because of the higher risk of bleeding disorders. Other common immune conditions the Type O may encounter are candida infections, thyroid disease, and inflammatory conditions.
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Type O benefits from higher intensity exercise to fatigue the cardiovascular and musculo-skeletal systems. Physical exercise floods the body with chemicals that act as a tonic for the entire body and regular exercise balances emotional responses, especially in stressful situations.
More than any other blood type, Type O relies on exercise to maintain balance in physical and emotional health. By developing higher levels of lean muscles mass Type O will increase their metabolic output on a daily basis. This alone may prevent Type O from falling into the O-specific condition of Syndrome X.