All of those assumptions are wrong, he said. A Little Education Goes a Long Way Birth control methods often fail because of rumors and misinformation. One such myth, currently circulating among adolescents, is that if the male drinks Mountain Dew soft drink, his female partner won't get pregnant, Feldman says. That rumor reinforces the need for sex education, currently mandatory in some states, but not in all. Merely preaching abstinence doesn't give young people proper guidelines or information, Feldman says.
Sex is natural.
Contracepting is not. It's a learned skill. Getting air in the tip of a condom can cause it to burst. Continuing to have sex after a condom has been used can cause it to stretch and leak, and storing them in the heat can cause them to melt and weaken, he said. Even the pill can fail if a woman forgets to take it.