Doctors often prescribe aspirin to people with a history of heart problems.
A new study shows aspirin may contribute to faster growing tumors and lead to an early death from cancer.
Researchers conducted a first-of-its-kind double blind placebo controlled clinical trial into aspirin and its connection to cancer.
More than 19,000 adults were involved in the study.They were followed for five years and all were free from heart problems or physical disabilities at the beginning of the study.
Both groups showed about the same number of people who developed cancer.