A government task force says a daily low dose aspirin could help certain people in the 50's and 60's prevent a first heart attack or stroke, and might also protect against colon cancer if they take it long enough.

The U.S. Preventive Services Task Force issued draft guidelines recommending aspirin if people meet a strict list of criteria, including a high risk of heart disease.

The task force said people in their 50's were most likely to benefit, while doctors should consider treating people in their 60's on a case by case basis.

Aspirin therapy has long been recommended for heart attack survivors.