One thing about me I'll footnote here because I think it's important. My issues are caused by a non-functioning pituitary tumor, which has greatly reduced my pituitary function to the extent that all downstream hormones are not optimal. Nothing (other that testosterone) was out of range low, but all very, very close to bottom limit. And I'm 29 in otherwise great health, so I was feeling pretty terrible.
All that to say my DHEA supplementation may be working well because I am actually deficient. We'll see after these labs and over time.