TUESDAY, May 21 (HealthDay News) -- When a classmate commits suicide, teens are more likely to consider or attempt suicide themselves, according to a new study. This "suicide contagion" occurs regardless of whether the teens knew the deceased student personally, the researchers found.

TUESDAY, May 21 (HealthDay News) -- Finding early signs of lung cancer was once next to impossible, but a new study adds to a growing body of evidence suggesting that screening with low-dose CT scans may help spot the beginnings of disease in high-risk patients.

TUESDAY, May 21 (HealthDay News) -- Less is more when it comes to steroid therapy for patients having severe bouts of chronic obstructive pulmonary disease (COPD), according to Swiss investigators.

TUESDAY, May 21 (HealthDay News) -- The overall health of Americans isn't improving much, with about six in 10 people either overweight or obese and large numbers engaging in unhealthy behaviors like smoking, heavy drinking or not exercising, a new government report shows.

TUESDAY, May 21 (HealthDay News) -- Depression can affect almost every aspect of life, but some of the changes brought about by the disorder can be downright dangerous for those with diabetes.

TUESDAY, May 21 (HealthDay News) -- The monstrous tornado that devastated Moore, Okla., on Monday, killing dozens of adults and children, is a stunning example of violent weather that can affect a child's mental well-being.

TUESDAY, May 21 (HealthDay News) -- Urban elementary school children with poorly controlled asthma are likely to experience sleep problems and suffer academically, new research indicates.

TUESDAY, May 21 (HealthDay News) -- The risk of sudden infant death syndrome (SIDS) is five times higher when parents sleep with their infant, a new study finds.

TUESDAY, May 21 (HealthDay News) -- Chronic obstructive pulmonary disease (COPD) patients experience a significant amount of pain, new research suggests.

Here are some of the latest health and medical news developments, compiled by the editors of HealthDay:

TUESDAY, May 21 (HealthDay News) -- Pregnant women with specific alterations in two genes may be at increased risk of suffering depression after giving birth, a small new study suggests.

TUESDAY, May 21 (HealthDay News) -- Thousands of Americans, many of them smokers or ex-smokers, suffer from the lung condition known as chronic obstructive pulmonary disease (COPD). Now a new study finds that patients placed on the common antibiotic azithromycin may be able to cut down on hospitalizations due to flare-ups of the disease.

TUESDAY, May 21 (HealthDay News) -- Racial disparities exist in the treatment of non-small cell lung cancer among hospitals in the United States, according to a large new study.

(HealthDay News) -- The next time you go for a run or jog, staying safe should be your first concern.

(HealthDay News) -- You produce tears to help keep your eyes moist and protected from irritants. But dry eye can make your eyes vulnerable and uncomfortable.

MONDAY, May 20 (HealthDay News) -- When it comes to the care of your children's teeth, dentists aren't the only experts who can help.

MONDAY, May 20 (HealthDay News) -- Injections of a sugar solution appear to help relieve knee pain and stiffness related to osteoarthritis, a new study suggests.

MONDAY, May 20 (HealthDay News) -- Obese and overweight men and women who suffer from heartburn often report relief when they lose weight, a new study shows.

MONDAY, May 20 (HealthDay News) -- Long-acting inhaled medications used by millions of people with chronic obstructive pulmonary disease (COPD) may raise the risk of cardiovascular complications among older patients, a new large Canadian study reveals.

MONDAY, May 20 (HealthDay News) -- Young drivers who get behind the wheel while drowsy run a higher risk of getting into car crashes, but Australian researchers have found that not catching up on missed sleep on weekends puts them in even greater danger of having an accident at night.

MONDAY, May 20 (HealthDay News) -- Although people with implantable cardioverter defibrillators (ICDs) are often advised to avoid activities more strenuous than golf or bowling, new research suggests that many people with these heart devices can participate in more vigorous sports.

MONDAY, May 20 (HealthDay News) -- The costly form of radiation therapy that has become the norm for prostate cancer in the United States may be no better than the older, cheaper variety -- at least for some men, a new study suggests.