Certain blood types more susceptible to blood clots, other bleeding conditions and diseases finds study

Scientists have confirmed through a study that people with certain blood types are more susceptible to blood clots or bleeding conditions as well as other diseases like kidney stones, or pregnancy-induced hypertension.

The study is a confirmaiton of previously identified connections. The study has been published in eLife. Previous studies have found that people with blood type A or B were more likely to have cardiovascular disease or experience a blood clot than people with type O blood, and that people with type O blood were more likely to have a bleeding condition. Others have suggested that people with certain blood types may be more susceptible to some infectious diseases.

Researchers scanned Swedish health registries with information on more than five million people for links between ABO blood type or RhD-positive or RhD-negative blood groups and more than 1,000 diseases. They found 49 diseases that were linked to ABO blood types, and one that was linked to the RhD group.

Their findings confirmed that people with type A blood were more likely to experience a blood clot and that those with type O blood were more likely to experience a bleeding disorder. They also verified that women with type O blood were more likely to experience pregnancy-induced hypertension.

Additionally, they found a new connection between having type B blood and a lower risk of developing kidney stones. And women who were RhD-positive were more likely to experience pregnancy-induced hypertension.

The authors say that more studies are needed to confirm the results and to determine how different blood types or groups may increase the risk of certain diseases, or whether there are alternative explanations for these relationships.

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