WASHINGTON, DC -- The ads on TV and many doctors tout the benefits of aspirin to reduce the risk of a first heart attack or stroke in some people.

The FDA Tuesday said studies don't support that claim.

In fact, there are serious risks associated with the use of aspirin, including increased risk of bleeding in the stomach and brain, in situations where the benefit of aspirin for primary prevention has not been established, the FDA warns.

Before you stop taking aspirin, the FDA says you should talk with your doctor about your specific situation.

The agency said it's awaiting results of clinical trials already underway that could have results in the next few years. The results could be the basis for changing the current uses for aspirin.

The government says it continues to support the use of aspirin for secondary heart attack or stroke prevention.

Click here for more on the FDA and Use of Aspirin for Primary Prevention of Heart Attack and Stroke.

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