Getting just the right dose of the blood-thinning drug warfarin is tricky. The appropriate amount can very as much as 10-fold among different people, and taking too little or too much is dangerous. In a demonstration of the power of personalized medicine, new evidence shows that genetic testing can help doctors prescribe the drug more accurately.

What’s that you say? Antioxidant vitamins may protect against what?

Do dreams reveal hidden truths or provide glimpses into the future? A surprisingly large percentage of people from cultures around the world say the answer is yes.