![]() Guggenheim says that for patients trying to keep their heart healthy, there's no special recommendation that he'd make other than a good heart-healthy diet that lowers inflammation, regardless of someone's blood type. While research available now shows that blood type can tip the scale in terms of someone's risk of developing heart disease, big factors such as diet, exercise or even the level of pollution you're exposed to in your community are the major players in determining heart health. Should I change my lifestyle based on my blood type? Cognitive impairment includes things like trouble remembering, focusing or making decisions. Other research has found people with type AB blood might be at an increased risk for cognitive impairment when compared to people with type O. People with type O blood may also fare worse after a traumatic injury due to increased blood loss, according to a study published in Critical Care. ![]() This may be especially true after childbirth, according to a study on postpartum blood loss, which found an increased risk in women with type O blood. ![]() ![]() People with type O blood enjoy a slightly lower risk of heart disease and blood clotting, but they may be more susceptible to hemorrhaging or bleeding disorders. There are four main blood groups (types of blood): A, B, AB and O. Severe COVID-19 disease often causes heart problems, blood clotting and other cardiovascular issues. Guggenheim also thinks this may describe the anecdotal (but currently inconclusive) decrease in risk of severe COVID-19 disease in people with type O blood, which has inspired research. The proteins present in type A and type B blood may cause more "blockage" or "thickening" in the veins and arteries, leading to an increased risk of clotting and heart disease. People in the same study with type A and B blood were 51% more likely to develop deep vein thrombosis and 47% more likely to develop a pulmonary embolism, which are severe blood clotting disorders which can also increase the risk of heart failure.Ī reason for this increased risk, according to Guggenheim, might have to do with inflammation that happens in the bodies of people with type A, type B or type AB blood. While the increased risk is small (types A or B had a combined 8% higher risk of heart attack and 10% increased risk of heart failure, according to one large study) the difference in blood clotting rates is much higher, per the AHA. People with type A, type B or type AB blood are more likely than people with type O to have a heart attack or experience heart failure, according to the American Heart Association. The blood types most at risk for heart disease People with type O blood may have a lower risk of cardiovascular events. "In short, it's almost like the body has evolved around its environment in order to protect it as best as possible," Guggenheim said. While our blood can't keep up with the different biological or viral threats going around in real time, it may reflect what's happened in the past. People with type O blood may get sicker with cholera, for example, while people with type A or B blood may be more likely to experience blood clotting issues. Douglas Guggenheim, a hematologist with Penn Medicine. People with type O- blood are considered " universal donors" because their blood doesn't have any antigens or proteins, meaning anyone's body will be able to accept it in an emergency.īut why are there different blood types? Researchers don't fully know, but factors such as where someone's ancestors are from and past infections which spurred protective mutations in the blood may have contributed to the diversity, according to Dr. The ABO system is the best known way of classifying blood types.
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