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Fast food and alcohol advertising on television are contributing to young adult's weight problems and underage drinking according to new research.

High levels of family stress in infancy for young girls are linked to differences in everyday brain function and anxiety in teenage girls, according to new results of a long-running population study by University of Wisconsin-Madison scientists.

Babies who lived in homes with stressed mothers were more likely to grow into preschoolers with higher levels of cortisol, a stress hormone. In addition, these girls with higher cortisol also showed less communication between brain areas associated with emotion regulation 14 years later. Last, both high cortisol and differences in brain activity predicted higher levels of adolescent anxiety at age 18.

The young men in the study did not show any of these patterns.

Fat Teens at Risk for Impotency and Infertility as Adults  

Obese teen males have up to 50 percent less total testosterone than teen males that are not obese, significantly increasing their potential to be impotent and infertile as adults according to a new University at Buffalo study.

The study was published online as an accepted article in Clinical Endocrinology.

Increasing the amount of sleep that teenagers get can reduce their risk to insulin resistance and prevent diabetes in their future according to a new study in the October issue of the journal SLEEP.

The proportion of U.S. adolescents with diabetes or borderline diabetes has jumped dramatically since the late 1990s, raising the possibility that this one out of four teens may face high rates of heart disease and other health complications as adults.

The proportion of U.S. adolescents with diabetes or borderline diabetes has jumped dramatically since the late 1990s, raising the possibility that this one out of four teens may face high rates of heart disease and other health complications as adults.