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Hpta

Parker123

AnaSci's Hillbilly
Aug 6, 2004
289
0
0
Florida
Does the use of testosterone shut down your natural GH production as well as testosterone? Or does GH supplementation shut down natural GH production?
 

DragonRider

Steroid Nazi
Jan 25, 2004
3,718
0
0
The shadows of your mind
My best guess is no because exogenous testosterone suppresses the natural testosterone production regulated by the body's HPTA (hypothalamus-pituitary-testes-axis) system due to the negative feedback loop caused by too much testosterone and estrogen in a males body. Since this reaction is specific to the presence of excess testosterone, the HPTA is reacting to prevent excess testosterone only.

Someone who knows more about GH and it's effects should probably answer this more fully.
 
P

pincrusher

Guest
testosterone will actually have a slight increase in your gh & igf levels where tamoxifen(nolvadex) will decrease them. this will kinda go against the old theory thay nolva should be taken at night before bed. it really should be taken in the am or mid afternoon abut not at night before bed as it will suppress the bodies own gh production which is at its highest peak while you sleep.
non aromatizable dihydrotestosterone will also decrease gh & igf levels.