New ovarian cancer test | Testosterone | How the PAP test began | A deep look at sleep

We heard today about a new test for ovarian cancer.  For a long time there's been a search for a way to reliably detect this cancer early on.Some men are prescribed testosterone-replacement therapy in middle age or older, but there's questions around how safe that is for their heart attack and stroke risk.In developing the cervical screening program one woman—Mary Papanicolaou—did a test every day, for 21 years—it's what we now call the PAP test.People tend to think they need seven or eight hours sleep a night. But what counts more is the quality of that sleep.