Health and Fitness

At least one in four teenage American girls has a sexually transmitted disease, suggests a first-of-its-kind federal study that startled some adolescent-health experts.

Some doctors said the numbers might be a reflection of both abstinence-only sex education and teens' own sense of invulnerabilty. Because some sexually transmitted infections can cause infertility and cancer, U.S. health officials called for better screening, vaccination and prevention.

Only about half of the girls in the study acknowledged having sex. Some teens define sex as only intercourse, yet other types of intimate behavior including oral sex can spread some diseases.

Among those who admitted having sex, the rate was even more disturbing — 40 percent had an STD.

"This is pretty shocking," said Dr. Elizabeth Alderman, an adolescent medicine specialist at Montefiore Medical Center's Children's Hospital in New York.

"To talk about abstinence is not a bad thing," but teen girls — and boys too — need to be informed about how to protect themselves if they do have sex, Alderman said.

The overall STD rate among the 838 girls in the study was 26 percent, which translates to more than 3 million girls nationwide, researchers with the U.S. Centers for Disease Control and Prevention found. They released the results Tuesday at an STD prevention conference in Chicago.

Full report: Study finds 1 in 4 US teens has a STD

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Teenagers who regularly eat breakfast tend to weigh less, exercise more and eat a more healthful diet than their breakfast-skipping peers, U.S. researchers said on Monday.

The study involved 2,216 adolescents in the Minneapolis-St. Paul area of Minnesota whose eating patterns, weight and other lifestyle issues were tracked for five years. They were just under 15 years old when they entered the study, which was published in the journal Pediatrics.

The more regularly the teens ate breakfast, the lower their body mass index was, according to the study. BMI is a measure of body weight relative to height. Those who always skipped breakfast on average weighed about 5 pounds more than their peers who ate the meal every day.

"What we found in the study was that kids who eat breakfast frequently, and especially every day, they're more healthy overall in terms of their lifestyle," Mark Pereira of the University of Minnesota School of Public Health, who led the study, said in a telephone interview.

"They're much more physically active and they have a better diet overall. So they have lower fat intake, lower cholesterol intake, higher fibre intake."

An estimated 25 percent of U.S. children regularly skip breakfast, the researchers said. This comes amid rising obesity rates among young people.

Full report: Breakfast keeps U.S. teens lean

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With music pumping in the background, the kids in Terry Wade's physical education class are in constant motion, going from sit-ups to jumping jacks to curls with light weights.

After their 45-minute session, the sixth-graders who are sweating the most, or as Wade calls it, "burning butter," get stickers.

"My main goal and emphasis is getting these kids up and moving," said Wade, who teaches at Northrich Elementary in the Richardson school district in suburban Dallas. "It's 'Can this kid do this for a lifetime?' I don't care how good they are. I care if they're having fun."

Instead of team sports, Wade and other physical education teachers across the country are focusing more on individual activities that students can incorporate into their lives long after their school days are over.

Experts say the shift also helps gym teachers include children who are struggling with their weight. With individual activities, overweight students can work at their own pace, and not be left on the sidelines. And they can take part in lower impact activities like weightlifting, yoga or martial arts.

Full report: PE: Focus on Exercise, Not Team Sports

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U.S. health officials alerted the public on Tuesday about the deaths of two patients who were treated with a prescription drug to control bed-wetting.

The Food and Drug Administration said it was unclear whether the drug, desmopressin, had contributed to the deaths. But the agency said nasal versions were no longer approved for treating bed-wetting and doctors should consider other options.

Desmopressin is sold under the names DDAVP Nasal Spray, DDAVP Rhinal Tube, DDVP, Minirin and Stimate Nasal Spray. Makers include Sanofi-Aventis and several generic companies.

Other forms of the drug "should be used cautiously" in patients at risk of sodium imbalances that can be caused by over-hydration, the FDA said.

The agency reviewed 61 reports of patients treated with desmopressin who developed seizures related to hyponatremia, when sodium is too low. Two of the patients died.

Full report: US warns about bed-wetting drug after two deaths

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A teaspoon of honey before bed seems to calm children's coughs and help them sleep better, according to a new study that relied on parents' reports of their children's symptoms.

The folk remedy did better than cough medicine or no treatment in a three-way comparison. Honey may work by coating and soothing an irritated throat, the study authors said.

"Many families are going to relate to these findings and say that grandma was right," said lead author Dr. Ian Paul of Pennsylvania State University's College of Medicine.

The research appears in December's Archives of Pediatrics and Adolescent Medicine

Federal health advisers have recently warned that over-the-counter cough and cold medicines shouldn't be used in children younger than 6, and manufacturers are taking some products for babies off the market.

Three pediatricians who read the study said they would tell parents seeking alternative remedies to try honey. They noted that honey should not be given to children under age 1 because of a rare but serious risk of botulism.

Full report: Try Honey for Children's Coughs

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