Animals studies (made IIRC by Pfizer or BioNTech, and using GFAP mRNA, not the spike protein) had shown that while most lipid nanoparticles stay at the injectio

Animals studies (made IIRC by Pfizer or BioNTech, and using GFAP mRNA, not the spike protein) had shown that while most lipid nanoparticles stay at the injection sites, (quoting from memory) ~10-20% end up in the blood stream, then enter myocardial, hepatic, adrenal and gonadic tissues. In other words, organs that consume a large amount of cholesterol. My informed guess would be that the nanoparticles combine with HDL/LDL in the blood stream, and end up in the cells that consume these, but this is speculation. This would end up disrupting the ovarian endocrine cells (cholesterol is the chemical precursor of sex hormones), which can regenerate once the RNA and its product has been eliminated. The future egg cells should not be affected (and AFAIK the ovarian reserve is not damaged by the COVID vaccines), and neither is sperm production.