A new Australian study has found taking aspirin daily does not prevent cardiovascular disease.

The study of more than 19,000 healthy people aged over 70 found taking 100 milligrams of aspirin a day didn’t prolong their life or significantly reduce the risk of a first heart attack or stroke.  The study also found that taking a small dose of aspirin daily could increase the risk of serious bleeding.

Lead researcher Professor John McNeil from Monash University said the results of the seven-year study should prompt people who take aspirin — when they have no medical reason for doing so — to reconsider whether it is a good idea.