In your early 20s, 90% of your eggs are genetically normal. By your mid-40s, however, fewer than 20% of your eggs remain healthy.
What Are Your Chances of Getting Pregnant on Ovulation Day? - Inito
Our Success Rates - Fertility Solutions
The effects of daily meteorological perturbation on pregnancy outcome: follow-up of a cohort of young women undergoing IVF treatment, Environmental Health
U.S. Women More Likely to Have Children Than a Decade Ago
Chances of pregnancy by age chart
Getting Pregnant in Your 30's: Benefits, Risks, and Advice
Age & Impact on Female Fertility - IVF Australia
When should you start trying to get pregnant? » British Fertility Society
Effect of female age on the probability of natural conception leading