NO SURPRISE HERE: “A new study has found that adolescents who use condoms the first time they have intercourse do not go on to have more sexual partners than others, and that they have lower rates of sexually transmitted diseases than those who do not use condoms the first time.” Of course, part of this is probably that the type of person who uses a condom the first time is the type of person who tends to be more careful, and less impuslive, in general.