Sponsored by the Committee for Healthcare of the City of Moscow, we conducted an anonymous, cross, educational questioning of 250 families of teenage-schoolchildren (in Moscow), who used to have sexually transmitted infections (STI), and a questioning of teenage-schoolchildren without the STI history (controls). The questioning program of teenagers and of their parents was split into 5 units based on 3 basic components covering the health state of any population category, i.e. body, environment, behavior. Our conclusion was that the communication of children with their parents enables the children to master the basic norms of behavior and morality and to observe the implementation of role-tied functions in the parental family. Therefore, it is advisable to focus on the parents and families while working out the purpose-oriented comprehensive programs of disease prevention (STI, in particular) among children and teenagers.