That's interesting Zapp. I never considered cortisol. I've always been underweight. Good thing, because it gave me a 4F in our army draft in the late 60s. However, I've always been very cold natured and typically have blue nail beds all during the winter ever since I was very young. I tried the Iodine therapy. That did not work. But it probably would not help hypothyroid condition anyway.
I have been trying to build up my adrenals by use of HV suggested herbs, and supplement with vitC and B50 daily. I'm not sure that is helping my cold condition.
My feet are already well chilled, and it is 77F in the house. I wonder if there is something I can specifically do to build up release of cortisol. I wonder if higher cortisol is even healthy. I never look forward to winter. I become a hermit and antisocial.