The Association Between Paternal BMI and Semen Quality in Cohorts Undergoing IUI, IVF and ICSI Fertility Treatments: A Systematic Review and Meta-Analysis.

What was studied

This review looked at fathers' body weight and semen quality. It covered men who seek IUI, IVF or ICSI fertility treatment. The team searched PubMed and other databases for studies that compared weight groups. They pooled the results from the studies that qualified.

What they found

Overweight men had lower sperm total motility than men of normal weight. One sub-group analysis found differences in sperm concentration between overweight and normal weight men. Obesity showed no significant link with semen measures.

What it means for patients

The authors say paternal overweight had a significant effect on total motility. They say paternal obesity showed no significant link with semen measures. They call for more studies using new body measures.

Why it is not certain yet

Studies that tested a treatment were left out of this review. The authors say metabolic and lifestyle factors still need to be ruled out. A review can only be as good as the studies in it. The abstract does not give the bias ratings.

Source

The Association Between Paternal BMI and Semen Quality in Cohorts Undergoing IUI, IVF and ICSI Fertility Treatments: A Systematic Review and Meta-Analysis.

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