Health questions aren't dumb, but can be gross

Maybe it's never crossed your mind to wonder whether sitting on a public toilet seat can give you something ghastly.

Or if all-day heat-lamped rotisserie chickens are safe to eat. Or if getting your nose pierced is dangerous and/or reversible. Or a whole plethora of questions you'd hardly think to run by your best friend, no less your (gasp) doctor.

Fret not. Dr. Roshini Rajapaksa, Health magazine's medical editor and a physician who (among other things) specializes in women's health, has heard them all.

She's even heard some you probably never even dared to think about. She answers 240 such questions in her new book, "What the Yuck? The Freaky & Fabulous Truth About Your Body."

We pulled out five that don't make us blush - at least not too much.

How bad is it really to borrow a friend's razor?

"Bad. Razors can pick up traces of blood and other bodily secretions, so you're essentially exposing yourself to your friend's blood and any infections or STDs lurking in her body (hepatitis B or C, herpes, HIV etc.)."

Is it true my underwire bra will give me breast cancer?

"Not true! There was once a theory that underwire bras blocked the lymphatic drainage of the breast, causing an accumulation of toxins that could then lead to cancer. But lots of studies have looked at links between underwire bras and cancer and haven't found a problem. Plus, we know now tha