Does body mass index impact assisted reproductive technology treatment outcomes in gestational carriers.

Background: The purpose of this study was to assess whether increased body mass index (BMI) negatively affects assisted reproductive technology (ART) outcomes among gestational carriers.

Methods: A retrospective matched case-control cohort, including all gestational carrier (GC) cycles performed at CReATe Fertility Centre (Toronto, ON, Canada) between 2003 and 2016.

Setting: A Canadian fertility clinic, with a large surrogacy program.