Special Harvard Commentary: The Potential of Stem Cells The controversy over stem cell research has become a front page story. Find out what the contention is all about. Super Bugs -- Antibiotic Resistance Harvard expert Howard LeWine, M.D. answers questions about antibiotic resistance. Harvard Special Commentary: Questions and Answers About Swine Flu Questions and answers about swine flu How Safe Is the Blood Supply? Safer than ever, thanks to a series of checks, tests and re-tests. Here's a look at the process awaiting every drop of donated blood — before, during and after donation. Your Own Blood Supply Donated blood is pretty darn safe. But when you can give blood to yourself, so much the better. Clinical Trials, Medical Teachers Clinical Trials, Medical Teachers Clinical trials are one of medicine's best-kept secrets. Such research can provide those suffering from disease, such as cancer or diabetes, with the opportunity for early cure or alleviation of symptoms. Medical Myths Does Being a 'Lefty' Affect Your Health? Have you heard these "facts" about left-handed people? How much is true? What Are You Yawning About? As common as it is, little is known for sure about yawning. Does it mean you are tired? Bored? Trying to give someone a hint? Natural Disasters -- Sources of Disease? How Much of the Brain Do We Really Use? Brain scans show that humans regularly use all of the brain, although some parts may be more active than others. So why does the myth that 90% of our brain power is unused persist? The Ups and Downs of Body Temperature Do Alternative Treatments and Vitamin Supplements Work? In recent years, the popularity of complementary and alternative medications (CAM) and vitamin therapy has increased dramatically. This led the National Institutes of Health to create the National Center for Complementary and Alternative Medicine. Fourteen years and more than $3 billion later, what have we learned? Sleep: What's Going on Behind That Shut-Eye? The notion of sleep as the body's ultimate "down time" has some truth to it, but sleep is also an active process, in which the brain can be remarkably busy, even if the body remains (mostly) immobile. Cramps: What They Are, What To Do A common misconception is that muscle cramps are caused by abnormal potassium, sodium or calcium. In fact, for most types of cramps all of these are normal and treatment to replenish these minerals, known as electrolytes, has no clear effect. 10 Osteoporosis Myths There's a lot about osteoporosis that is misunderstood. So, let's talk about a few of them and try to set the record straight. In Search of the Elusive Aphrodisiac: Sex, Food and Myth The idea that certain foods can increase sexual interest, improve sexual performance or enhance fertility has been around for centuries. If true, which foods have this power and how do they work their magic? And if it’s not true, why is this myth so durable? What Your Doctor Is Reading Update From the Medical Journals: September 2013 What's the latest news in the medical journals this month? Find out what your doctor is reading. Update From the Medical Journals: August 2013 What's the latest news in the medical journals this month? Find out what your doctor is reading. Update From the Medical Journals: July 2013 What's the latest news in the medical journals this month? Find out what your doctor is reading. Update From the Medical Journals: June 2013 What's the latest news in the medical journals this month? Find out what your doctor is reading. Update From the Medical Journals: May 2013 What's the latest news in the medical journals this month? Find out what your doctor is reading. Update From the Medical Journals: April 2013 What's the latest news in the medical journals this month? Find out what your doctor is reading. Update From the Medical Journals: March 2013 What's the latest news in the medical journals this month? Find out what your doctor is reading. Update From the Medical Journals: February 2013 What's the latest news in the medical journals this month? Find out what your doctor is reading. Update From the Medical Journals: January 2013 What's the latest news in the medical journals this month? Find out what your doctor is reading. Update From the Medical Journals: December 2012 What's the latest news in the medical journals this month? Find out what your doctor is reading.