. . . Today, we are faced with a host of health problems that require individual action. . . . Bringing about that action requires education. The task is made unusually difficult because of the insidious nature of the chronic diseases, the lack of any action individuals may take, the age-group that must be influenced, the large number of agencies that are involved, and the need for modification of some of our cultural patterns and value systems. This is the challenge to the profession of health education.