In a nutshell
This study investigated if there is a link between male body mass index (BMI) and success of assisted reproductive treatment (ART). They found that high BMI in males is linked to reduced pregnancy and live birth rates in couples undergoing ART.
Some background
The causes of infertility in a couple are not always easily identified. Men may contribute to 50% of the lower fertility. One factor that is associated with male infertility is obesity. Obesity can be measured using the body mass index (BMI; a measurement that takes into account height and weight ). Obesity and high BMI has been linked to reduced testosterone levels, sperm count and quality. Couples with infertility may undergo assisted reproduction techniques (ART).
Recent reports suggest that male BMI has an important influence on embryo quality following ART success. However, it is unclear if male BMI has any effect on clinical pregnancy rates (CPR) and live birth rates (LBR) after ART.
Methods & findings
This study included data from 11 clinical trial reports of couples undergoing ART. The authors extracted data on male BMI, CPR, and LBR.
A high BMI was associated with a 22% reduction in CPR and a 12% reduction in LBR in couples undergoing ART. Men classified as obese were associated with a 28% reduction in LBR following ART. When taking high female BMI into account, high male BMI still had a significant effect on CPR and LBR.
The bottom line
The authors concluded that high BMI in males is linked to reduced pregnancy and live birth rates in couples undergoing ART.
The fine print
There may be other factors that can influence pregnancy and birth rates.
What’s next?
If you have any concerns regarding BMI and fertility health, please consult with your physician.
Published By :
Reproductive BioMedicine Online
Date :
Feb 02, 2018
