Again, aspirin is not needed if you do not have a history of heart attack or stroke. There ARE benefits to taking an aspirin per day if you have a history of cardiovascular disease, but there is increased risk of bleeding (in the stomach and brain) which outweighs the benefits if you do NOT have cardiovascular disease.
The FDA released a May 2, 2014 statement in response to Bayer (maker of brand-name aspirin) wanting to change their packaging. Bayer wanted to market aspirin for heart-attack prevention for patients with no history of cardiovascular disease. Studies, however, have shown that even high-risk patients (with risk factors) who have never had a heart attack or stroke are just as likely to have a heart attack or stroke while on aspirin as compared to those who are taking a placebo (sugar pill).
So, if you are taking aspiring but you have never had a heart attack or stroke… stop taking aspirin.