700 African-American female adolescents' between the ages of 14-20 will be enrolled in this trial. Adolescents will be recruited from youth currently seeking services at several family planning clinics in Atlanta, Georgia. Adolescents who are eligible and willing to participate in the project will complete an initial ACASI survey. The survey is designed to assess adolescents' sexual risk and preventive behaviors. Biological specimens are collected and tested for common STI's. Free DOT (Directly Observed Therapy) is provided through the clinics. Urine pregnancy screens will also be conducted. After they complete the assessment, adolescents will receive a sexual health education program that was developed by the Principal Investigator. This program (HORIZONS) has been shown to be effective in reducing sexual risk behaviors over the short-term. Trained African American female health educators will deliver the sexual health education program. Adolescents will then be assigned, by chance alone, to one of two groups: one group will get periodic telephone contacts designed to reinforce sexual health promotion and the other group will get periodic telephone contacts that promote healthy dietary practices. Thus, while all adolescents receive the same sexual health education program, half will get telephone calls emphasizing sexual health and half will get an equal number of telephone calls emphasizing nutritional health.