Please google "Suppversity", the latest post on that website should be. (Sorry I can't link just yet)When Hype Meets Reality:Turns Out to Be Another Supplemental Nonstarter in First Human Trial With Any Relevance for Healthy Young Men
Interesting read on a study done on DAA in normal testosterone range atheletes, showing no changes. I only just skimmed through it.
I'm really surprised as this goes against all the anecdotal reports I've seen.