Columbia University health education program has quarterly newsletter and section to email about teenagers' problems.

Advice about parenting teenagers, including sex and drugs, communication barriers, rebellion, suicide, and eating disorders.

Sponsors research and educational programs relating to the physical and mental well-being of adolescents. Get details on the groups's programs.

Nonprofit offers guidance for families with teens who are oppositional and defiant, and may have school, emotional, drug, or alcohol problems.