I GOT YOUR BACK dude
ALRIGHT GUYS listen; ill take you on a mammalian physiology journey. Yes I am qualified.
THere are a few different types of hyperthyroidism.... Graves disease is where the thyroid istelf is hyperactive via FSH. So the only way to fix that is by iodine treatment and destruction.
The other types are caused by hypothalamus secreting too much TRH
or the pituitary hyper secreting TSH.... Do you follow?
IN these two cases the THYROID isn't the culprit for the origin of malfunction... The malfunction is delocalized and in the conduction pathway of the thyroids metabolism.
SO in these cases HE would NOT need to kill his thyroid. HE would have to take a drug to inhibit production of thyroid activating hormones on the regulation pathway.
SO he takes a drug, Which in none- graves hyperthyriodism functions to control the negative feed back mechanism and lower release of TSH...
Synthriod in this case actually can act as either an inhibitor at the thyroid by lower binding of FSH
or it can increase the suppression of TRH in the hypothalamus via negative feedback loops
There are MANY MANY MANY complications that can cause hyper or hypo thyroidism... I think most people assume that he has hashimodos or graves being those are the most common.
BACK to my point:
If the function of his synthroid is to cause suppression of TRH, the anabolics will use of that synthetically MORE BIO-reactive Thyroxine ( synthroid)
Thus the synthroid will not be able to do its job as a activator of the negative feedback look for the hypothalumus...
Therefor he will REVERT to a hyperthyroid state (in this case where the thyroid itself is hyperactive)
I really feel I am qualified- I am in grad school focusing study on mammalian physiology..
Thank you