Semen quality has declined especially among Western men. Experimental and
epidemiological studies have shown potential links between exposure to environmental …

Maternal cigarette smoking may affect the intrauterine hormonal environment during
pregnancy and this early fetal exposure may have detrimental effects on the future trajectory …

Objective To evaluate associations between work-related stress, stressful life events, and
perceived stress and semen quality. Design Cross-sectional analysis. Setting Northern …

Our objectives were to evaluate gender-specific associations of racial discrimination with
psychological sequelae among middle-aged Blacks and to evaluate the capacity of racial …

Extensive evidence leads us to expect that health disparities by race and socioeconomic
status found in one generation might be reproduced in the next. To the extent that this occurs …

Background: Studies of body mass index and semen quality have reported mixed results,
but almost all were cross-sectional and many were conducted in selected populations …

Maternal smoking during pregnancy constitutes a potential, major risk factor for adult male
reproductive function. In the hitherto largest longitudinal cohort, we examined biomarkers of …

Fertility is a couple concept that has been measured since the beginning of demography,
and male fecundity (his biological capacity to reproduce) is a component of the fertility rate …

It has been proposed that poor semen quality may have its origins from fetal programming
due to environmental factors. We investigated whether maternal coffee consumption during …

This issue of the Journal features collaborative follow-up studies of two unique pregnancy
cohorts recruited during 1959–1966 in the United States. Here we introduce the Early …