Evolution may be why humans are prone to heart attacks, study says

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Evolution may be why humans are prone to heart attacks, study says
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Researchers think that there was the loss of a single gene in human ancestors between 2 million and 3 million years ago that has led to a higher risk of cardiovascular disease

One-third of global deaths are due to cardiovascular disease caused by atherosclerosis, when arteries are clogged with fat deposits. Although it's common for humans to experience heart attacks, the same event is rare in mammals. Now, researchers believe that they understand why.

Risk factors for cardiovascular disease in humans can include age, hypertension, obesity, smoking, blood cholesterol and inactivity. However, in 15% of cardiovascular events caused by atherosclerosis, none of these risk factors is at hand. Closely related mammals like chimpanzees living in captivity share some of the same risk factors for cardiovascular disease: hypertension, inactivity and high blood lipids.

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