First of all Bro, i have to say this.....you would use steroids but not hCG???
As far as shut down....yes it does but thats where you need knowledge to make sure it doesnt get that far.
And this bro "It also has been shown to decrease natty LH production through a seperate feed back loop. "
This makes no sense.
LH isnt produce by the nuts and second,
There is no seperate feed back loop.
What happens when one use hCG to long is that it takes the place of LH. Now, LH is not the first in line. It is actually manufactured in the pituitary under the response of Gonadotropin releasing hormone (GnRH) which is secreted from the hypothalamus.
Since your supplying the LH externally, the negative feedback loop signal to the hypothalamus will still tell it to stop making GnRH, and so no natural LH is produced.
This is why you always use hCG in conjunction with a estrogen receptor antagonist like clomid or Nolvadex. These “antagonists” will lower estrogenic response creating an unbalance or a deficit.
What happens when there is an unbalance? The negative feedback loop signals the Hypothalamus to start producing whatever hormone it needs, in this case, making GnRH.