Loss of body heat and greater sensitivity to cold
What could be the cause of much greater sensitivity to cold, faster cooling of the body and reduced heat generation? I have already done all the basic tests, all the thyroid tests (TSH, FT3, FT4, anti-TPO, anti-TG) everything is normal. It's not cold feet or hands either, but a whole body coldness. In comparison, since the onset of my symptoms I feel cold in a jumper even when it is 23 °C; before that I was warm in shorts and a T-shirt when it was 18 °C. Now I still sleep under a winter duvet, whereas a year ago I would have "boiled" in such situation and exposed half my body to the outside. It may sound silly, but I have the impression that my body has lost some layer of insulation…. Is it possible to check this somehow?