I feel cold all the time and because of this my circulation is rubbish - people often remark on how cold my hands and feet are. Whenever I have mentioned this to my GP over the years, I get my TSH tested, which is always completely normal.
But my thyroid is fine! To be honest, I never thought it was failing, but that there was something else going on. I finally forked out for a full thyroid screen which confirmed this. Everything came back totally normal: frees in the upper third of the reference range, and no antibodies.
So what else could it be? The only time I am warm is when I do vigorous exercise. It's as is there is a metabolism block, and the exercise somehow lifts the block. Then when I stop moving, I quickly go back to being cold.
I have been trying to work this out for a couple of years, and have made good progress - no more brain fog or hair falling out! I was badly iron deficient, borderline B12 deficient, and am gluten intolerant (possibly coeliac). But although I've boosted my iron and B vitamin levels, and given up gluten containing foods, things are still not quite right. I'm a lot better, but I still don't seem to have the ability to produce my own heat!
Any ideas at all would be welcome!