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The influence of maternal body mass index (BMI) on pregnancy and child health outcomes is well characterised, however less is known about paternal BMI. This systematic review investigated the independent effects of increased paternal BMI on conception and pregnancy as well as neonatal and childhood outcomes.

Our systematic search (Sept. 2018) of PubMed, Embase, Cinahl, Web of Science, ProQuest, and OpenThesis resulted in 11,045 hits from which 17 studies met the inclusion criteria (Participants: men Exposure: BMI or waist circumferences Outcomes: associations with time to pregnancy, incidence of infertility, pregnancy loss, pregnancy complications, birthweight and length, childhood weight and height, or incidence of any childhood disease). Studies had to adjust for maternal age and BMI.

Meta-analysis was only possible for infertility which was significantly more prevalent …