This type of therapy has greatly improved my quality of life! I have quite low testosterone, considered below the "normal" range, even for a male my age (late 30s). I suspect I've always had low T, but doctors would not test for that while I was in my 20s. Now I finally have a diagnosis from a reputable physician (my PCP). Before TRT, I had extremely low energy, no sex drive, and very foggy thinking--I could barely make it through a work day. Now, things are greatly improved, and I can't imagine going back!