Do you know what's really good for you?In this age of countless miracle cures, it's vital to separate the myths that endanger your health from the medical facts you need. FACT: Unfiltered coffee can clog your arteries.FACT: Donating blood may lower your risk of heart disease.FACT: You don't really need eight glasses of water a day.FACT:Coughing won't help if you're having a heart attack. (But aspirin will!)We've become a nation of cyberchondriacs, diagnosing ourselves with false information and half-truths found on sketchy websites. In Medical Myths That Can Kill You, Dr. Nancy Snyderman, chief medical editor for NBC News, provides clear, practical, scientifically proven advice that can lead you to a healthier, happier life.Discover the simple, everyday things that affect well-being, and get the information you need to revitalize your body, maintain your longevity, manage your care, and possibly even save a life-yours.