One in seven American adolescents is vitamin D deficient, according to a new study by researchers in the Department of Public Health at Weill Cornell Medical College. The findings are published in the March issue of the journal Pediatrics and were presented at the Pediatric Academic Societies' Annual Meeting in May 2008.

In the early days of the Internet, some scholars once predicted a lessening of racism and race-based discrimination in online interactions thanks to the anonymity and race-neutral nature of the medium.

About half of teens reference sex, substance use or other risky behaviors on their publicly available online profiles, according to a report in the January issue of Archives of Pediatrics & Adolescent Medicine, one of the JAMA/Archives journals.

Emory University in Atlanta is playing a key role in the largest, most comprehensive study ever funded by the National Institute of Mental Health (NIMH) of adolescents and young adults at risk for developing a psychotic disorder.

The New York City Alliance Against Sexual Assault, in collaboration with Columbia University Mailman School of Public Health's Center for Youth Violence Prevention, announced the results of a three-year, comprehensive research project on sexual and dating violence among New York City high school students, and the health impact of that violence on those victimized by it.

Tuesday the Centers for Disease Control and Prevention released a study showing that one in four teenage girls is infected with at least one sexually transmitted disease.

University of Minnesota School of Public Health Project Eating Among Teens (EAT) researchers have found further evidence to support the importance of encouraging youth to eat breakfast regularly.

New data showing a significant increase in the Montana teen birth rate for 2006 has drawn the attention of officials with the Department of Public Health and Human Services (DPHHS).

Half of all new HIV infections in the United States occur among 13 to 24 year olds, but adolescents rarely seek HIV testing. Now, new research from the Bradley Hasbro Children’s Research Center suggests that early and widespread testing – both in schools and community centers – may be the key to effectively curbing the spread of HIV within this age group.

The antidepressant fluoxetine combined with cognitive behavioral therapy appears as effective for treating depression among teens who also have substance use disorders as among those without substance abuse problems, according to a report in the November issue of Archives of Pediatrics & Adolescent Medicine, one of the JAMA/Archives journals.

A Swiss study suggests that teens who use only cannabis appear to function better than those who also use tobacco, and are more socially driven and have no more psychosocial problems than those who abstain from both substances, according to a report in the November issue of Archives of Pediatrics & Adolescent Medicine, one of the JAMA/Archives journals.

Teens exposed to secondhand smoke at home are at increased risk of test failure in school, suggests a new study in the Journal of Adolescent Health.