Scientists are excited about a vitamin again. But unlike fads that sizzled and fizzled, the evidence this time is strong and keeps growing. If it bears out, it will challenge one of medicine's most fundamental beliefs: that people need to coat themselves with sunscreen whenever they're in the sun. Doing that may actually contribute to far more cancer deaths than it prevents, some researchers think.
Next thing you know, they'll find something redemptive about tobacco. Actually I thought I'd read that it helped suppress TB (the TB bug doesn't like the smoke either), but I can't find the cite.
Link via Drudge.