Gum disease may secretly sabotage female fertility, new study reveals

A new study from the Hebrew University of Jerusalem (HUJI) suggests that chronic gum inflammation could harm female fertility. Researchers found that persistent oral inflammation triggers wider immune responses, potentially damaging reproductive health. The findings, published in the Journal of Dental Research, highlight a previously unexplored connection between dental and ovarian health.

The research team, led by Michael Klutstein alongside Asaf Wilensky and doctoral students Paz Kles and Stephen Ameho, used a mouse model to examine the effects of oral inflammation. Dental devices were implanted to mimic chronic gum disease, allowing scientists to observe reproductive changes over time.

The results showed a clear impact on fertility. Only 25% of mice with the inflammation-inducing implants produced offspring, while all untreated control mice gave birth. Further analysis revealed that the inflammation spread beyond the mouth, activating a body-wide immune response that reached the ovaries. In the ovarian tissue, researchers detected higher levels of inflammatory markers and shifts in immune cell composition. There was also evidence of oxidative damage, impaired follicle development, and reduced egg quality. These changes contributed to lower live birth rates, suggesting that chronic oral inflammation may disrupt key reproductive processes.

The study proposes a biological explanation for unexplained infertility, linking oral health to reproductive challenges. While the findings are based on animal models, the team has called for human studies to explore the connection further. If confirmed, this research could influence how dental care is integrated into fertility assessments.