Loss of body heat and greater sensitivity to cold

Posted by lemlas421 @lemlas421, May 20, 2022

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?

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Hi @lemlas421, Welcome to Connect. You will notice that we modified your discussion title to hopefully better describe the discussion and help members with similar symptoms find it and share their experience. I'm thinking there could be a lot of answers to your question of what could be the cause of greater sensitivity to cold, etc.. For me, it's just the fact that I have grown older. When my wife's mother was alive and living with us I could not understand how she could always be cold with the thermostat set to almost 80 degrees in the dead of Winter while I was roasting in a cooler basement. Now that I'm in my late 70s I completely understand since I'm also colder when other younger folks are in short sleeve shirts and shorts. I did find this article that discusses heat loss that may be helpful for understanding the different causes.

— Physiology, Heat Loss: https://www.ncbi.nlm.nih.gov/books/NBK541107/
— Physiology, Temperature Regulation: https://www.ncbi.nlm.nih.gov/books/NBK507838/

You mentioned having all of the thyroid tests. Did you also have the thermoregulatory sweat test (TST)?

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