FRIDAY, June 24 (HealthDay News) -- An exhausting emergency rescue of someone in surf far from shore doesn't affect a lifeguard's ability to carry out lifesaving CPR, according to a new study.

(HealthDay News) -- High blood pressure gets all of the attention, but very low blood pressure can be just as dangerous, experts say.

(HealthDay News) -- While there's no such thing as a safe sunburn or tan, some cases can damage the skin permanently.

FRIDAY, June 24 (HealthDay News) -- Pregnant women with depression receive inconsistent treatment and, as a result, may spend more time in the hospital before their babies are born, a new study finds.

FRIDAY, June 24 (HealthDay News) -- Most athletes will attest to the importance of warming up before a competition, but warm-ups that are too rigorous can hurt an athlete's performance, a new study indicates.

FRIDAY, June 24 (HealthDay News) -- Dieting and disordered eating that begin in adolescence often continue into young adulthood, a new study finds.

FRIDAY, June 24 (HealthDay News) -- Drinking even a single glass of beer or wine can raise blood-alcohol concentrations enough to increase the chances of being seriously injured or dying in a crash for those who choose to get behind the wheel, a new study suggests.

FRIDAY, June 24 (HealthDay News) -- Among U.S. drivers who died in a car crash, about one in four tested positive for drugs, a new study has found.

FRIDAY, June 24 (HealthDay News) -- Autism experts have long noted that they meet a lot of engineers and computer programmers who have autistic children compared to, say, salespeople. A new study suggests there may be merit to those observations.

FRIDAY, June 24 (HealthDay News) -- Children who live in stress-filled homes experience more air pollution-related lung damage than kids in less stressful environments, a new study finds.

FRIDAY, June 24 (HealthDay News) -- The health benefits of gastric bypass surgery may go beyond helping people lose weight, new research suggests.

FRIDAY, June 24 (HealthDay News) -- A new study finds that the practice of "sexting" -- sending salacious texts or nude photos over the Internet -- is now a key tool for Americans bent on infidelity.

FRIDAY, June 24 (HealthDay News) -- Lifestyle changes such as losing weight, drinking less alcohol and getting more exercise could lead to a substantial reduction in breast cancer cases across an entire population, according to a new model that estimates the impact of these modifiable risk factors.

FRIDAY, June 24 (HealthDay News) -- Snacking accounts for 25 percent of the calories consumed by Americans each day and beverages account for half of those snacking calories, a new study indicates.

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

FRIDAY, June 24 (HealthDay News) -- Doctors should use the anemia drugs Procrit, Epogen and Aranesp more cautiously in patients with chronic kidney disease, U.S. health officials said Friday.