Male cigarette smoking and fecundity in couples attending an infertility clinic

Summary. The relationship between male cigarette smoking and fertility was studied for 330 couples attending an infertility clinic. 59% did not smoke, 10% smoked between 1 and 5 per day, 8% smoked between 6 and 10 per day, 16% smoked 11–20 per day and 7% smoked more than 20 per day. There was no significant association between smoking and any semen parameter. 138 men had a female partner who was apparently normal. There was no significant difference in smoking habits between the ‘normal’ and ‘abnormal’ female groups. Couples were followed‐up for up to 32 months. Nineteen women had a treatment independent conception within the ‘normal’ female group. There was no significant association between the number of cigarettes smoked and the fertility outcome. 1991 Blackwell Verlag GmbH