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Blood Type and Your Heart

Your blood type can influence your cardiovascular system in many ways. There’s a strong correlation between blood type and the ability to metabolize fats and oils. Blood type affects the thickness of the blood and reactivity of blood vessel walls. It also affects the body’s chemical response to stress. Since stress is an important factor for heart disease, these blood type-specific variations can be a key factor in cardiac health. There are also risk factors, such as smoking cigarettes, that have nothing to do with your blood type.

Heart disease is more common among blood types A and AB, although nobody is immune. The main difference is that As and ABs tend to have problems with high cholesterol, while Os and Bs tend to have high triglycerides, formed by eating too many carbohydrates. The higher rates of As and ABs in heart disease patients can skew the results of dietary studies. If 75% of cardiac patients in a study improve with a low fat diet, most researchers don’t worry about the other 25%. They simply recommend the low fat diet for all heart disease patients. That’s why the “conventional wisdom” about what constitutes a “heart healthy diet” differs so much from what I recommend for Blood Types O and B.

Intestinal alkaline phosphatase, or AIP, is an enzyme produced in the small intestine that breaks down dietary cholesterol and fats. It is released in response to ingesting proteins and fats, especially saturated fat. Blood types O and B release far higher quantities of AIP than blood types A and AB. This means that meals high in animal products are more fully digested in Os and Bs, and do not usually spike blood cholesterol levels.

But a low fat, high carb diet often leads to Metabolic Syndrome for Os and Bs. Metabolic Syndrome is a clustering of conditions that raises your risk for heart disease and other health problems. These factors include abdominal fat, high triglycerides, low HDL (“good” cholesterol), high blood pressure and high blood sugar.

The ability of blood to clot, or harden, is important so we don’t bleed to death after an injury. Blood is fluid, but contains platelets and inactive clotting factors. The clotting factors are activated when there’s an injury, so they can make platelets stick together to form clots. These clots are good when there’s a wound that needs mending, but can be harmful when there are only slight damages to blood vessels. The clots themselves can build up and inhibit proper blood flow, like a layer of scabs inside the blood vessel. Sometimes a clot can break off and get lodged elsewhere in the body, blocking blood flow there. This can lead to heart attacks or strokes if the clots cause blockages near the heart or brain.

Blood type influences a clotting factor called Factor VIII. This factor is higher in blood types A and AB, and lower in blood types B and O. Types A and AB are also more likely to get arterial inflammation, which damages artery walls. Irritated skin inside the vessels means more spots for blood clots to form.

Type Bs and ABs have trouble regulating nitric oxide, a compound which allows blood vessels to relax and open up. The foods for these types are chosen to be high in arginine to promote nitric acid production. B-specific lectins, such as those found in chicken, interfere with fat metabolism and can directly thicken blood. Avoiding the harmful foods helps to promote healthy blood vessels.

The heart is a muscle, and regular exercise helps to keep it strong and able to keep pumping efficiently. Exercise also helps to maintain a healthy weight, and can lower stress levels.

Type As have naturally high levels of cortisol and difficulty lowering it. Gentle exercise such as walking, tai chi, and yoga can help lower stress levels and promote fitness in As. Over training or heavy aerobic exercises can cause additional stress to the A body, causing more harm than good.

For Blood Types B and AB, stress regulation and overall fitness are achieved with a balance of moderate aerobic activity and mentally soothing, stress-relieving exercises. Such activities as hiking, martial arts, swimming, cycling, tai chi, yoga, Pilates, and brisk walking are good choices.

Exercise is key to cardiovascular health, and this is especially true for blood type O. Strength training builds up muscle mass, which aids in metabolic efficiency. Type O requires regular, high intensity exercise to maintain optimal physical health and emotional balance. But any amount of movement is better than none, if you’re not currently healthy enough for intense workouts.

For more information, including details about diet and exercise recommendations, you can refer to my book Cardiovascular Disease: Fight It With the Blood Type Diet. A complete listing of the foods for the Blood Type Diet can also be found on the Type Base.

TOP HEART HEALTHY FOODS FOR EACH BLOOD TYPE

Top Heart Healthy Foods for Blood Type O

Top Heart Healthy Foods for Blood Type A

Top Heart Healthy Foods for Blood Type B

Top Heart Healthy Foods for Blood Type AB

These checklists were excerpted from the
Cardiovascular Disease: Fight it with the Blood Type Diet
book,
where you can find other healthy tips and recipes that are right for your blood type.

About: 

Dr. Peter D'Adamo is a naturopathic physician, author, researcher-educator and software developer. He is considered a world expert on glycobiology, principally the ABO blood groups and the secretor (FUT2) polymorphisms. He is the author of the international best-seller, Eat Right 4 Your Type and the Blood Type Diet series of books, and he is currently a Distinguished Professor of Clinical Sciences at the University of Bridgeport, Connecticut.

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