I never went with the adenochrome-story... It seems to me that no miracle-chemical will exist to stay young ... and if it did ... it would have to be some dna/rna-code to be created in a lab. Also .... if it is so special and somehow it can not be mass-produced with chemistry ... if a human would be able to produce it then a pig probably too. There is just too much magic in this story. Organ harvesting seems to be a market, but adenochrome? At the same time the wiki-page about the stuff comes with a decent story on how the stuff became so fantastic. Also there was a patent on how to simply synthesize it.
When someone takes a steroid, which shuts off the adrenal glands, they age fairly quickly. There is a chemically created chrome, one in the Wuhan Lab.
Do some research, and you'll see that it's true.