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Many drugs, both legal and illegal, have side effects that affect the user's sexual function. Because drug and alcohol use is commonly presented as an excuse for unacceptable behaviour, it is necessary to treat the idea of a direct causal relation between drug use and unsafe sex with caution. Drugs may provide a socially acceptable excuse for engaging in sexual behaviours in which people may want to engage but perhaps know that they should not.〔Race K (2009): ''Pleasure Consuming Medicine: The queer politics of drugs'' Durham: Duke University Press.〕 Tobacco use (e.g., cigarette smoking), also reduces sexual function, with the incidence of impotence being approximately eighty-five percent higher in male smokers compared to non-smokers.〔(【引用サイトリンク】 url=http://www.tobaccoprogram.org/tobaccorefguide/ch12/ch12p1.htm )〕 Since the partial cause of the refractory period is the inhibition of dopamine by an orgasm-induced secretion of prolactin, such potent dopamine receptor agonists as cabergoline may help achieve multiple orgasms as well as the retention of sexual arousal for longer periods. ==See also== * Sex and alcohol * Hardline (subculture) * Methamphetamine and sex * Nitrite inhalants * Party and play * Straight edge * Wine, women, and song 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Sex and drugs」の詳細全文を読む スポンサード リンク
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