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 WASHINGTON (AP) - The research could give you whiplash: Aspirin prevents cancer, one study says. Oops, maybe not, says another. Now comes word that aspirin may fend off cancer only if people take much more than is used to fight heart disease, suggesting some of the earlier back-and-forth may have been due to confusion over the right dose.
Even that evidence is circumstantial, offering no end to the competing headlines.
"A general perspective that people have is, 'Why is it so difficult to get a clear answer on a pill that costs a few pennies and is available over-the-counter and taken by millions of people?'" says the American Cancer Society's Dr. Michael Thun, a coauthor of the newest study.
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