If you're a woman, there's a good chance you've used Johnson's Baby Powder at some point. It smells good, and it can keep you dry.
But is it dangerous?
Dr. Daniel Cramer says yes. He's a professor of obstetrics and gynecology at Brigham and Women's Hospital in Boston. He says talc – the mineral in talcum powder – can cause ovarian cancer.
"Overall, women may increase their risk in general by about 33 percent by using talc in their hygiene," Cramer says.