Comprehensive sex education programs have [demonstrated success](https://pubmed.ncbi.nlm.nih.gov/22341164/) in reducing rates of sexual activity, sexual risk behaviors, STIs, and adolescent pregnancy and delaying sexual activity. Many [systematic reviews](https://www.sciencedirect.com/science/article/pii/S0749379711009068?via%3Dihub) of [the literature](https://www.tandfonline.com/doi/abs/10.1080/17437199.2016.1240625?journalCode=rhpr20) have [indicated](https://www.cdc.gov/healthyyouth/data/profiles/pdf/2018/CDC-Profiles-2018.pdf) that comprehensive sex education promotes healthy sexual behaviors:
- Reduced sexual activity.
- Reduced number of sexual partners.
- Reduced frequency of unprotected sex.
- Increased condom use.
- Increased contraceptive use.