Even in the relatively abundant west world today 70% of infertility may be caused by diet (https://www.healthstatus.com/health_blog/ovulation-2/diet-and-lifesty

Even in the relatively abundant west world today 70% of infertility may be caused by diet (https://www.healthstatus.com/health_blog/ovulation-2/diet-and-lifestyle-can-affect-your-fertility/ https://www.healthstatus.com/health_blog/ovulation-2/diet-an...). In the past poor people had even worse diets, it was probably even worse for the post famine Irish you used as an example. > Our knowledge of biology is not innate It's not,but we've known what the result of "seeding a woman" has been for several thousand years so I have a hard time believing it took that long to come up with the pull out method. For the poor bedrooms are also a recent invention, they probably got a lot more sex-ed passed down directly.