Exercise, DHT and hair loss?

Exercising has nothing to do with hair loss or DHT.  DHT is just a hormone..  If you do not have the genes for androgenic alopecia, DHT will NOT affect your hair.

There is no good evidence that any exercise program positively or negatively affects DHT and therefore the balding process. Genetics is the key regulator of this hair loss programming in males. 

genetic male pattern hair loss has a genetic pre disposition and that means it will go through its progression no matter what. Of coarse nutrition, exercise and supplements  may help maintain or slow it down a bit but there is no scientific study to back it up. It is best to see a specialist and start on a medical regiment routine to slow down the progression . 

So, you have joined millions of young men with genetic balding. That should be treated by a good doctor. Usually, the doctor will prescribe Propecia which can stop and possibly reverse the hair loss in young men. Exercise all you want, that will not impact your hair loss and forget about DHT as it is a normal metabolite of testosterone on all men that happens to trigger genetic balding in those who inherited the genes for balding. Propecia treats the DHT most effectively.