The intent was simply to evade long debates about the STTM and Denis Wilson/rT3-Wilson’s-syndrome approaches. Those methods have their advocates. My experience more closely matches ideas described by Dr. Peat. Some overlapping working ideas I arrived at independently. So I attend more to this kind of site.
Practically speaking, some hesitations about thyroid are because how supplemental thyroid is regulated. Physicians must prescribe it for humans to receive it, unless persons find work-a-rounds. It is difficult for most to explore beyond the orthodox prescribing.
I wish to give @Arrade his full due in describing his journey and tracking responses.
Briefly, my experience is, when thyroid supplementation is indicated, it is helpful to use some T3 divided during the day, along with T4. (In transitioning, it seems sensible to accordingly lower the T4 quantity when adding T3.)Contrary to observations in other posts, I have known some people (far from a majority) who over the short term (months) have done OK-ish with T4 only. I have encountered many long-term T4-only users whose lingering symptoms were quickly relieved by adding T3.
While the idea of nibbling a few milligrams of T3 every couple of hours may be useful, almost nobody does this consistently even when desperate. It seems generally more useful to aim for dividing T3 amounts into about 4 times per day. Most appear to follow that approximately.
There can be risk for any substance, even water/salt/oxygen. The functional margin of safety for small thyroid doses seems much larger than for medications physicians use routinely, and for many OTC substances. Due to many widespread metabolism-impairing influences, many folk can find rapid relief by boosting thyroid function promptly.
(Preparing to get flamed.)
In short youre saying the issue is compliance, in order to bio-replicate what a "healthy" system should be doing.