How about your favorite Old Wives Tales related to health?

How about the ol' "feed a cold, starve a fever" that our grandmothers (or great-grandmothers) used to tell everyone.

I have had more than one parent get visibly upset at the site of their baby in the isolette with a scalp IV. Because we had to shave or cut the child's hair. And everyone knows that if you cut a child's hair before he/she is a year old, the child will be stupid!!

My favorite is the wet hair tale. I worked in an ER filled with well educated nurses and dr's, and still everytime I walked into work with wet hair from my shower, I would hear the dreaded " You'll catch a cold walking around in this weather with wet hair!" Also used were pneumonia, bronchitis, the flu, etcc.. All this from a little wet hair!