FRIDAY, June 4 (HealthDay News) -- For kids, summertime used to mean days spent at the beach or lake, afternoon bike rides and playing badminton in backyards.

(HealthDay News) -- Graves' disease occurs when the body's immune system causes the thyroid gland to produce more of a certain hormone than the body can use.

(HealthDay News) -- Fifth disease is a viral illness that primarily affects young children who attend school.

FRIDAY, June 4 (HealthDay News) -- A year ago, global alarm over the emergence of an unpredictable new strain of H1N1 pandemic flu was in full swing. Headlines blared that thousands were becoming sick; face masks and hand sanitizers were selling out as soon as they hit store shelves.

FRIDAY, June 4 (HealthDay News) -- Americans and Canadians infected with HIV are not getting diagnosed quickly enough after exposure, resulting in a potentially harmful delay in lifesaving treatment, a new large study suggests.

FRIDAY, June 4 (HealthDay News) -- When a person gets angry it is often possible to see them physically tense up, but now researchers have found out what else is going on inside the body.

FRIDAY, June 4 (HealthDay News) -- Hip exercises can reduce a common type of knee pain in female runners, according to a new study.

FRIDAY, June 4 (HealthDay News) -- Only about one-third of American girls ages 13 to 17 have received the vaccine to protect against human papillomavirus (HPV), suggests a new study.

FRIDAY, June 4 (HealthDay News) -- Midriff-revealing uniforms are linked to a higher risk of eating disorders among college cheerleaders, new research shows.

FRIDAY, June 4 (HealthDay News) -- Researchers say they improved the learning capacity of mice afflicted with a disease similar to Down syndrome by interfering with the production of a specific protein.

FRIDAY, June 4 (HealthDay News) -- Getting low-dose hormone replacement therapy through a skin patch may reduce a woman's risk for stroke, but high-dose patches could actually raise the risk, a new study suggests.

THURSDAY, June 3 (HealthDay News) -- Low intelligence in young males has been linked to a much higher risk that they'll commit suicide, at least compared to their most intelligent counterparts, researchers say.

FRIDAY, June 4 (HealthDay News) -- In elderly patients, prompt removal of a suddenly inflamed gallbladder improves survival and reduces costs and complications, new research shows.

FRIDAY, June 4 (HealthDay News) -- Contrary to what many athletes would like to think, a new study shows that compression garments have no effect on sports performance.

FRIDAY, June 4 (HealthDay News) -- In the future, people with diabetes may be able to monitor their blood sugar levels using a glucose "tattoo."

FRIDAY, June 4 (HealthDay News) -- Certain kinds of video games -- like Nintendo's Wii Sports -- may help overweight seniors become more physically active and burn calories, new research suggests.

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

(HealthDay News) -- Here are the latest clinical trials, courtesy of ClinicalConnection.com: