A recent study conducted by researchers at Emory University’s Rollins School of Public Health has shed light on the negative impacts of outdoor air pollution on human embryo development during in vitro fertilization (IVF) cycles. The study, published in Environment International, explored the effects of both maternal and paternal exposure to air pollution on fertilization and embryo quality.

The researchers took a unique approach by examining the independent associations between air pollution exposure and embryo development in both females and males. They analyzed samples from 500 anonymous oocyte donors and 915 male recipients undergoing IVF between 2008 and 2019 at a fertility center in Atlanta.

One of the key findings of the study was the detrimental impact of ambient exposure to organic carbon, a component of fine particulate matter PM2.5, on oocyte survival, fertilization, and embryo quality. Organic carbon is commonly emitted from sources like vehicle exhaust, industrial processes, and wildfires.

Lead author of the study, Audrey Gaskins, highlighted the significance of the research, stating that both maternal and paternal air pollution exposures during gametogenesis have independent and largely negative effects on early embryological outcomes. This underscores the importance of mitigating air pollution exposures for individuals seeking to conceive.

Sarah LaPointe, the first author of the study and a postdoctoral research fellow at Rollins, emphasized the need for greater awareness of the impact of air pollution on reproductive health. She stressed that addressing air pollution should be a priority for populations trying to conceive.

The study, titled “Air pollution exposure in vitrified oocyte donors and male recipient partners in relation to fertilization and embryo quality,” provides valuable insights into the effects of air pollution on embryo development. The researchers hope that their findings will prompt further research and interventions to reduce air pollution and support reproductive health.

For more information, the study can be accessed in Environment International with the DOI: 10.1016/j.envint.2024.109147. The research was conducted in collaboration with Emory School of Medicine and Georgia Institute of Technology.

This study serves as a reminder of the importance of environmental factors in reproductive health and underscores the need for continued efforts to address air pollution for the well-being of future generations.