WEB DESK: Heart diseases cause number of deaths each year which is alarming. Doctors and experts have figured out many reasons behind it and researches are still taking place in this regard. 

Recently, researchers at the University Medical Centre Groningen in the Netherlands analyzed data from more than 1.3 million people, looking at their blood types and any incidents of cardiovascular events, including heart attack, heart failure, and death. They found that individuals with a non-O blood group had a 9 percent greater risk of cardiovascular events, especially heart attacks, than those with an O blood type.

Since there isn't any authentic reason figured out yet but the researchers suggest one reason could be that people with non-O blood types have higher concentrations of von Willebrand factor, a blood-clotting protein that could lead to heart attack or stroke. Non-O blood groups are also known to have high cholesterol, especially those with blood type A.