Fertility and use of cigarettes, alcohol, marijuana, and cocaine.
This study demonstrated that cigarette smoking was associated with an increase in both time to conception (among 2817 fertile women) and risk of primary infertility (among 1818 infertile women and their primiparous control subjects). The average time to conception was 4.3 months for women who never smoked, 4.6 months for those who smoked in the past, and 5.1 months for those who currently smoked. The delay in conception for current smokers remained significant after adjusting for confounders ...Expand abstract
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