> I know that HGH + DHEA is the only drug from the list that has already proven to make healthy people younger.

If you have any ready-researched and outlined sources or links for this, please post them here for reference. I know that we all can google, but I think linking here will help a lot of people, me included. HN articles are sometimes used as an online notepad of sorts, a repository of well researched and compiled information with built-in peer review from (hopefully, since they are on HN) somewhat competent even if amateur internet researchers.