Deborah Franklin

There's a difference between knowing your breast cancer risk and believing it. When psychologists asked several hundred women to plug personal health data into an online tool that then calculated their breast cancer risk, nearly 20 percent rejected their scores as wrong.

People famous to one generation may be unknown to another. Getting an accurate diagnosis of dementia for younger patients may require a test that includes the faces of younger celebrities, researchers say.

Researchers have confirmed that cooking meat too long over a dry, intense heat creates small amounts of cancer-causing chemicals. Unfortunately, that's just the sort of flavor-enhancing fire you get on a backyard barbecue. What's a summer chef to do?