Teenagers are at a phase where they are curious about their bodies. Their raging hormones may sometimes lead them to engage in sexual activities without considering the consequences. This may leave them vulnerable to sexually-transmitted diseases (STDs), not to mention unwanted pregnancies.
STDs are diseases transmitted from one person to another through unsafe sexual contact (via vaginal, anal or oral sex). Teaching your teens about STDs should be part of their sex education. Start educating them as early as possible about the risk of STDs.