Because cortisol and other stress hormomes require thyroid hormone for production, we do see occasions where the stress response is being over-activated, but because of lack of thyroid hormone and / or poor metabolism, your ability to produce cortisol is inhibited. (forefronthealth.com)
When there is a lack of the thyroid hormone this slows down metabolism, decreasing appetite but causing weight gain. (fitnessandpower.com)
Because its effects are so far - reaching, a lack of thyroid hormone can result in a number of health conditions including: (rmalab.com)