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Subfecundity in overweight and obese couples.

C H Ramlau-Hansen¹, A M Thulstrup, E A Nohr

¹Department of Epidemiology, UCLA School of Public Health, University of California-Los Angeles, 650 Charles E. Young Drive S., Los Angeles, CA 90095, USA. craha@as.aaa.dk

Human Reproduction (Oxford, England)

|March 9, 2007

Summary

Obesity in either partner negatively impacts couple fecundity, increasing the time to pregnancy. Couples where both partners are obese face a significantly higher risk of subfecundity.

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Published on: March 25, 2021

Area of Science:

Reproductive Health
Human Reproduction
Obesity Research

Background:

Growing evidence links male and female obesity to reduced fecundity.
Fecundity is a crucial aspect of reproductive health for couples.
The study investigates the couple's weight status and its impact on fertility.

Purpose of the Study:

To examine the relationship between couple's overweight and obesity and their fecundity.
To assess the association between changes in weight over time and fecundity.
To understand the combined effect of parental weight on conception.

Main Methods:

Utilized data from the Danish National Birth Cohort (1996-2002).
Included 47,835 couples with information on Body Mass Index (BMI) and time to pregnancy (TTP).
Analyzed BMI and weight changes in relation to subfecundity (TTP > 12 months).

Main Results:

A dose-response relationship was observed between increasing BMI and subfecundity in both men and women.
Higher BMI in women was associated with increased odds of subfecundity (OR=1.32).
Higher BMI in men was also linked to increased odds of subfecundity (OR=1.19).
Each kilogram weight gain between pregnancies in women increased TTP by 2.84 days.

Conclusions:

Obesity in either partner adversely affects couple fecundity.
Couples where both partners are obese have a high risk of subfecundity.
Weight management is crucial for optimizing fertility outcomes in couples.