Getting started
Age and fertility
Why the age of the eggs matters most.
A woman is born with all the eggs she will have. Their number and quality fall with age, slowly at first and faster after 35. It is the age of the eggs, not the uterus, that matters most.
Approximate chance of success per IVF cycle by the wife’s age:
- 25–35: above 50%
- 35–37: 30–50%
- 38–40: 15–30%
- Over 40: 10–15%
- Figures vary with each couple’s history
Sources: American Society for Reproductive Medicine (ASRM) · UK Human Fertilisation & Embryology Authority (HFEA)
This guide is general education about fertility treatment, not medical advice for your own case. Your consultant will plan your treatment from your history, results and examination.
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