People need contraception because they have sex.
D001519:Behavior; D003906:Developing Countries; D004194:Disease; D004493:Education; D005193:Family Planning Services; D006262:Health; D006285:Health Planning; D007239:Infections; D009934:Organization and Administration; D018456:Reproductive Medicine; D012736:Sex Education; D012725:Sexual Behavior; D012749:Sexually Transmitted Diseases
Behavior; Developing Countries; Diseases; Education; Family Planning; Health; Infections; Integrated Programs; Organization And Administration; Premarital Sex Behavior; Programs; Reproductive Health; Reproductive Tract Infections; Sex Behavior; Sex Education; Sexually Transmitted Diseases--prevention and control; Training Programs