Job strain and time to pregnancy

Area of Science:

• Reproductive Health
• Occupational Health
• Epidemiology

Background:

• Job strain, characterized by high demands and low control, is a significant workplace stressor.
• Previous research has not investigated the direct impact of job strain on fertility.
• Understanding factors affecting fecundability is crucial for reproductive health.

Purpose of the Study:

• To examine the association between job strain and the time to achieve pregnancy.
• To determine if high job demands and low job control negatively affect female fecundability.

Main Methods:

• A prospective follow-up study of 297 Danish couples with no prior reproductive experience.
• Data collected over a maximum of 6 menstrual cycles following cessation of birth control.
• Job strain assessed using a validated questionnaire measuring job demands and control.

Main Results:

• The odds ratio for conception per menstrual cycle among women with high job strain was 0.9 (95% CI 0.5-1.5) compared to women in low-strain jobs.
• No statistically significant reduction in fecundability was observed in women experiencing high job strain.
• A significant reduction in odds was only found in secondary analyses of couples with no suspected fertility issues.

Conclusions:

• The study did not support the hypothesis that job strain substantially harms fecundability.
• Job strain, as defined, does not appear to be a major factor limiting conception in the general population.
• Further research may be needed to explore specific subgroups or different measures of job strain and fertility.