Maybe they could replace them with Goat Glands from 100 years ago.
https://www.nationalgeographic.com/adventure/article/documentary-interview-medicine-science
https://wncmagazine.com/feature/bad_medicine
Just this past week I watched a documentary about a doctor performing testicle transplants from deceased younger men into older men, I don’t think it was the same guy, but it could’ve been. Can’t remember where I saw it either. Maybe YouTube. He was also trying to transplant pig balls into humans, I think.