I'd heard something about treating ED with stem cell therapy, but couldn't remember much about it. I came across this article from NIH that goes into quite a bit of medical detail. In any event, this is not a rumor or hoax, it's real but is relatively new, so you might need to do some research into where you might obtain this type of treatment in your area. Not sure if it' covered under most insurance plans - ?? Here's the link:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3272247/