Hi there........I am 57 years of age and my body has always been cold but the last two years I am feeling colder. My thyroid was tested normal. It feels like all my heat source comes from outside of me. I live in the north and struggle with depression and my body gets very cold. It feels like I have no blood running through my veins. I have had many blood test but they all come back normal.
Have you considered whether or not you might SAD - Seasonal Affective Disorder. That's very common in northern climates due to the inability get outside often enough. We used to live in Iowa and I had that -- winter time was disasterous for me.
Beyond that -- have you been tested for thyroid antibodies? It's possible to have an autoimmune disease, that won't show up with just the standard thyroid tests of TSH, Free T4 and Free T3, but could still cause symptoms.
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