Horror films are scarier than ever. Why do we watch, and what do scary movies do to us?

  Canadian lab tests on rats show that a low dose of a synthetic version of pot's key chemical eases depression but high doses increase depression.

  Nearly a third of U.S. adults report extreme stress in a new survey from the American Psychological Association.

  A new study shows light to moderate drinkers performed better on breathing tests than people who abstain from alcohol.

  Most people with asthma say they have their disease under control, but experts say their symptoms tell otherwise.

  Adding capers to meat recipes may offset potentially unhealthy oxidation from meat's digestion, an Italian study shows.

  Scientists research strategies for taking insulin for type 2 diabetes.

  Nearly one in three asthma and COPD patients who use dry powder inhalers make mistakes in using their inhaler, a German study shows.

  Allergy, gastrointestinal reflux disease (GERD), and asthma seem to be the leading causes of kids' chronic cough, Louisiana doctors report.

  WebMD spoke with experts to get answers to nine common questions about MRSA.

  The prescription stay-awake drug Provigil will get new warnings about life-threatening rash, other serious hypersensitivity reactions, and psychiatric symptoms.

  Kids as young as 2 years can get a no-shot, nasal-spray flu vaccine -- if they don't have asthma, the U.S. vaccine advisory committee says.

  Smoke from California wildifires can create health hazards, especially for people with lung conditions.

  Young adults who marry or live with a romantic partner may be more likely than singles to gain weight, say University of North Carolina researchers.