The success rates of IVF vary significantly by age, primarily because egg quality and quantity decline as women age. Here is a general overview of IVF success rates by age based on recent data:
| Age Group | Success Rate (Live Birth per IVF Cycle) |
| Under 30 | Around 40-55% success rate per cycle |
| 30-34 | Approximately 40-50% |
| 35-37 | About 31-41% live birth rate |
| 38-40 | Around 20-27% live birth rate |
| 41-42 | About 10-20% live birth rate |
| Over 43 | Less than 10%, often around 2-5% |
- Women under 35 generally have the highest IVF success rates, with some studies reporting up to 55% chance of live birth per cycle.
- Success rates decline steadily with age, with a sharper drop after age 37 and especially over 40.
- For women over 40, success rates drop significantly, but using donor eggs can improve outcomes substantially since the age factor relates primarily to egg quality.
- Multiple cycles of IVF improve the cumulative chances of live birth, but age remains a key determinant.
- These statistics reflect average rates, and individual results can vary depending on health, fertility issues, clinic quality, and other factors.
In summary, IVF success is highest for younger women under 35 and declines with increasing age, with the rate dropping notably after 37 and more steeply after 40.
