High levels of cortisol in the hair shaft may increase the risk of heart attack, a study shows.

SAM-e plus prescription antidepressants may spell relief for hard-to-treat depression, according to a new study.

Does depression cause weight gain or weight loss? Does weight gain or weight loss cause depression? WebMD helps to unravel the mystery surrounding the link between depression and weight.

You wake up feeling crummy. Should you drag yourself to work and risk infecting coworkers? Or should you phone in sick, even though your boss desperately needs you to pitch in during a stressful week?

The long-term use of oral bisphosphonate osteoporosis drugs such as Actonel, Boniva, and Fosamax may be associated with a doubling in esophageal cancer risk, but the risk to individual users remains small, researchers say.

Men with insomnia have a fourfold higher death rate than those who sleep at least 6 hours a night, a 14-year study finds. It's not yet clear whether women with insomnia also die sooner.

An online quiz rates your hygiene practices with a letter grade -- and gives you the information you need to keep your food safe from bacteria.

Prescription drug use in the U.S. has been rising steadily in the past decade and the trend shows no signs of slowing, the CDC says in a new report.

New research finds little support for the hypothesis that marijuana is a "gateway" drug leading to the use of harder drugs in adulthood.

The journey toward health care reform reached a historic milestone March 22 when the House approved legislation that would extend coverage to 32 million more Americans and impose new restrictions on the insurance industry.

If you’re new to massages, all the types and techniques can be a little overwhelming. WebMD answers common massage questions and explains the different styles.

People who take Abbott's weight-loss pill Meridia have a higher risk of non-fatal heart attack and stroke, a study sponsored by the drug's maker finds.

Many people fail to rev up their exercise regimen before they leave for a ski vacation -- and the sudden burst of activity on the slopes puts them at risk for heart attack, researchers say.

The drugs apixaban and Xarelto are effective at preventing deadly blood clots, new studies show.

A research review finds that new moms have little sex drive in the first months after delivery.

In the wake of actor Michael Douglas's announcement that he has stage IV throat cancer, WebMD answers frequently asked questions about the disease.

People over 50 get a self-esteem boost when they read negative news about young adults, a study shows.

Older people with high blood pressure who drink one to two cups of coffee a day have more elastic blood vessels than those who drink less or more, Greek researchers report.

Tips for healthy skin care for your teen.

Many personal care products contain controversial chemicals. What do experts say about making healthy choices?

Avoiding irritating fumes that can make eyes red and watery.

Worried about chemicals like phthalates and parabens in your baby shampoos, soaps, and lotions? See what the experts say.

Tips on keeping your house germ-free.

How to avoid common triggers around an allergic child.

Get simple makeover ideas, in part 2 of our Spring Makeover Series, "4 weeks, 4 Simple Steps."