Annual Egg Production in Non-Pregnant Women
In a non-pregnant woman, the ovaries play a crucial role in reproductive health by producing mature eggs. This process, known as oogenesis, is essential for fertility.

Egg Production Cycle
- Each ovary typically releases **one mature egg** during each menstrual cycle.
- The average menstrual cycle lasts about **28 days**, but it can range from **21 to 35 days** in different women.

Number of Cycles in a Year
- Given that most women have around **12 to 13 menstrual cycles** in a year, this translates to:
- **12 to 13 mature eggs** produced by **each ovary** annually.

Variability in Egg Production
- Factors affecting egg production include:
- **Age**: Younger women tend to have more regular cycles.
- **Health Conditions**: Conditions like polycystic ovary syndrome (PCOS) can alter egg release.
- **Lifestyle Factors**: Stress, diet, and exercise can influence menstrual regularity.

Conclusion
- Overall, a non-pregnant woman typically produces **12 to 13 mature eggs** from each ovary each year, highlighting the cyclical nature of female reproductive biology and its dependency on various factors. Understanding these dynamics is essential for those preparing for conception or managing reproductive health.