Background Previous preterm delivery and maternal smoking are associated with increased
risks of preterm delivery. It is not known whether gestational age at the time of a preterm …

Several studies have examined the effect of in utero exposure to smoking and fecundity
among the offspring but the findings are contradictory. We therefore studied the waiting time …

STUDY OBJECTIVE--The aim was to study changes in smoking habits during pregnancy
and differences in characteristics between women who stop smoking and those who …

Smoking has multiple effects on hormone secretion and metabolism. These effects are
mainly mediated by the pharmacological action of tobacco alkaloids (nicotine and its …

Objective To measure quantitatively and objectively the maternal and fetal tobacco exposure
during pregnancy and its neonatal effects. Design Tobacco exposure was assessed from …

Assisted conception is a useful methodology for detecting disturbances in clinical outcome,
meiotic maturation, and genetic integrity of human gametes. Germinal cells are vulnerable to …

Cigarette smoking during pregnancy is an important, avoidable factor associated with low
birth weight. Maternal age is also associated with variations in birth weight. Using birth …

To identify components of smoking-related increased perinatal mortality, detailed analyses
of data from the Ontario Perinatal Mortality Study (50,000 births, 1,300 deaths, 1960–1961) …

Menopause onset, on average, occurs earlier among women who smoke cigarettes than
among women who do not smoke. Prenatal smoke exposure may also influence age at …

Although cigarette smoking is often considered a risk factor for spontaneous abortion, the
epidemiologic literature is actually inconsistent. Therefore, the authors examined maternal …