"Early adolescence is a time of change. Between the ages of ten to fifteen, youth experience the profound physical, mental, and social changes that occur during puberty. Their bodies mature, their mental abilities expand, and their relationships with their families and friends change - all of which may have health implications. Many lifestyle behaviors that affect health are initiated or shaped in early adolescence. Health education can help guide youth through these critical years of experimentation and increasing independence, and help them to become healthy individuals who realize their full potential."
- Surgeon General