I just turned 40 and the present I got was no libido and sweats with very very mild physical exertion. My drive to go to gym is practically dead.
I saw GP (NHS) and then andrologist and ofcourse absolutely suck! Because all numbers came within range they basically said everything is fine (funnily enough some other numbers (WBC) were very low but as I am not symptomatic for those .. they said let's ignore it!).
So have invested a lot of my own money to do blood tests. I would say the test show, these main problems:
(all within lab ranges, but out of functional ranges, and I am symptomatic)
I have attached lab reports - any hints. At the moment I am thinking of buying T4 and T3 myself and starting with small doses to see how I respond.