A lot of the fertility discussion here doesn’t include the truth. Fertility, 85% of it, is egg quality. The other 15% is the ability to make sperm or sperm quality, which is mostly good, and structural uterine problems. Egg quality begins when the woman was herself in utero. And it deteriorates over time. Today, though, the eggs are deteriorating much earlier and much faster than in our grandmothers’ time. It has nothing to do with us living longer, and probably not much to do with birth control of the individual.
Since young adult women who’ve never had children have had their uterine fluid tested and found nearly all to have Bisphenol A in their uteri, this new infertility epidemic is probably more due to environmental contamination. As with the other essential soft tissue epidemics we have these days: brain dysfunctions like Parkinson’s, autism, Alzheimer’s. We are screwing things up, and we don’t appear to care. Poisons like Round Up and Downey and neurotoxic food colorings are advertised daily on tv as though they are harmless.
Anyway, a woman’s egg quality remained at least 20% good until near her age 50, 200 years ago. Healthy babies were still born. Now, reproductive endocrinologists are finding women in their early 20s with only 50% of the eggs any good. I did a study like this. It’s shocking.
Sperm quality has also declined overtime, due to such factors, as well.