College presents opportunities for students to test their wings, explore new relationships, pursue their personal best, and develop an enduring passion for learning. Often the first opportunity for real independence, the college years can also pose serious health risks — among them, mental health issues, binge drinking, sexually transmitted diseases, date rape, infections, and sleep deprivation. Two academic leaders talk about campus health: Paula Johnson, a cardiologist and women’s health expert, is president of Wellesley College; Dan Porterfield, now president of the Aspen Institute, just stepped down as head of Franklin & Marshall College.