Why Does Female Fertility Decline So Fast? The Key Is the Ovary October 9, 2025 New research shows that the surrounding cells and tissues of the ovary play a crucial role in how eggs mature and how quickly fertility wanes. External URL https://www.ucsf.edu/news/2025/10/430841/why-does-female-fertility-decline-so-f… Area of Focus Health and Science/Aging Health and Science/Reproductive Health Health and Science/Technology and AI Health and Science/Women’s Health