I recently realized from some discussions on other other posts that a Levo supplementation often causes the Thyroid gland to stop producing T4. This is something very interesting because it in turn means that once someone has gotten on to Levo, they can't roll it back because their body may not be producing any.
A significant part of my struggle has been contributed by my desire to keep supplementation to a minimum and let the body produce the balance, but it sounds as if I would be better off by stopping to expect the body to producce anything and just get as much supplementation as required to bring the TSH below 1.
That makes me wonder what would happen, if for some reason ( long travel or some unforeseen event ) a Levo dependant person did not get the supply for a few weeks.
It is SCARY to even think about.