Research suggests Truvada still works when taken before and after sex

Many don't meet targets, and expert says even those targets aren't good enough to prevent heart attacks

But another report shows U.S. has more cases than 37 other developed nations

Ethics of Human Gene Editing Focus of International Conference Cheaper Alternative to Turing's Pricey Daraprim Soon Available

Experimental procedure tested in 4 morbidly obese patients so far

U.S. study suggests pregnant women may be less likely to smoke if tobacco prices are higher

Here are potential risks

Keep a food journal