A new study published in the Journal of the American Medical Association (JAMA) has found that taking aspirin on a regular basis to prevent heart attacks and strokes, can lead to an increased risk of almost 50% in major bleeding episodes. The systematic review from scientists looked at the overall effects on patients who did not have known the cardiovascular disease. They found that while it was associated with a lower risk of heart attacks and other cardiovascular events, it did lead to an increased risk of major bleeding.

While aspirin is known to reduce risks for those who have previously suffered strokes and heart attacks, the evidence of the role of aspirin in the initial prevention of cardiovascular events, is uncertain. This study looked at the outcomes of trials enrolling more than 1,000 participants with no known history of cardiovascular diseases and which included a follow-up…