Some patients describe chronic fatigue syndrome as feeling like an "unrelenting flu." iStockphoto.com hide caption
Think You're An Auditory Or Visual Learner? Scientists Say It's Unlikely
Many people with sleep apnea wear a CPAP machine mask in bed to help them breathe. Amy Walters/iStockphoto.com hide caption
King Henry VIII famously suffered from gout. iStockphoto.com hide caption
There, behind the sirloin steak and baked potato, is Outback Steakhouse's calorie-rich blue cheese wedge salad. AP hide caption
Messages like this on one at Pier 27 in San Francisco seem to be getting through to Californians. Thomas Hawk/Flickr hide caption
Keratoconus is an eye condition in which the normally round cornea thins, causing a cone-like bulge to develop. Courtesy of JirehDesign.com hide caption
Peggy O'Brien-Murphy receives a massage from therapist Loretta Lanz. O'Brien-Murphy was among the participants in a study that found both relaxation and deep tissue massage are effective treatments for lower back pain. /Group Health Research Institute hide caption
Being overweight or obese is a big risk factor for hypertension. iStockphoto.com hide caption
Artificial hips have been a big advancement in treating debilitating arthritis. But there have been reports of medical issues — some serious — in patients with all-metal implants. iStockphoto.com hide caption
A tattoo artist prepares inks before working on a client. The FDA says it wants to learn more about what goes into tattoo inks. Maggie Starbard/NPR hide caption
Most Americans spend the majority of their waking hours sitting still in front of a computer or television. iStockphoto.com hide caption