Forty-eight comprehensive programs were studied, and the two thirds that supported both abstinence and safer sex for sexually active teens had positive behavioral effects. Sixty-four percent of online teens age 12 to 17 years have created and posted a wide range of content on the web. In May , she could barely contain her outrage as she sat in her Chicago television studio and told parents something most were unprepared to hear: If sexual health education has been a regular part of visits in early years with discussions of pubertal changes or sexual content viewed on television and the Internet , it may be more comfortable to embark on more detailed discussions with a young person. The premise is not consistent with known scientific evidence on homosexual development and should not be supported by health-care professionals, according to a report by the American Psychological Association. Traditionally, studies that have examined the sexual development of youth have focused on vaginal sex, with little attention given to non-coital activities that do not lead to pregnancy, such as oral sex. More specifically, sexual scripts not only prescribe what is normative, but also serve as guidelines for when sexual initiation should occur. Let them know what your values are. In terms of family background, a review by Zimmer-Gembeck and Helfand found that early onset of sexual intercourse defined as before age 16 was more likely among youth from step-parent and single-parent families, whereas later debut was more likely among teens who grew up in two-biological parent families. Latex condoms to prevent STIs, including HIV infection, and appropriate methods of birth control should be made available, as should instructions on how to use them effectively. Results indicated that age-cutoffs for vaginal sex timing were similar for women and men, yet differed by gender for oral sex timing. Explaining the anatomy of what is visible is much more important than focusing on the invisible.