Basal Body Temperature not rising

[Ansteynomad]

I’ve now been on thyroxine for 13 months. My results are textbook, I feel well, I am living a full and active life, but my basal body temperature has never risen beyond an average of 36.1oC.

Any idea what’s going on?

[shaws Administrator]

Sometimes that's the case that the temp doesn't rise to what it used to be. The main thing is that you are feeling well, warm and not cold. Excerpt:-

The reason some patients’ temperatures remain low is what I call "differential tissue sensitivity to thyroid hormone." I came to this conclusion from many discussions with molecular biologists who do thyroid hormone research. In patients whose temperatures stay low, the temperature-raising enzymes whose gene transcription is increased by thyroid hormone (such as sodium-potassium-ATPase) are apparently partly or wholly exempt from regulation by thyroid hormone. Because of this, the patients’ body temperatures simply aren’t a useful gauge. They must use other physiological measures to assess their tissue responses to a particular dosage of thyroid hormone.

web.archive.org/web/2010103...