Eggs are produced when the unborn female is still in the uterus. The unborn female starts to make eggs nine weeks after conception. The female's lifetime supply of eggs is made before she is born. When she becomes sexually mature; puberty. her eggs are further processed and made ready for conception. Some women will run out of eggs sooner than others, due to many reasons.
Interestingly, males do not produce male gamete cells until after birth, with sperm cells made at puberty. Technically, only females, based on the simple criteria of female gamete cells; eggs, are aborted, since males are not fully differentiated in terms of male gamete cells until after birth.
If you look at the trans movement this has become a mainline fad, simply because it is now medically possible and legal to alter secondary sexual characteristics with medicines and surgery on a profitable scale. The same is true of abortion. Both see dollar signs. That makes these fads artificial.
If we take away the money making artificial additives and procedures, you end up with members of the two sexes, playing only secondary sexual characteristics cross dress up; apparel and makeup industries alone profit.
We live in shallow times, driven by the free market pitching goods and services for that shallow shell. Trans require way more goods and services than natural. It is a gold mine for the market place. However, we should not be pushing people to be engineered, even if this is a good business model and will make make a new generation of Lefty billionaires.