Most of the time, thyroid conditions are not from the actual thyroid gland itself, but it’s a liver disorder. There are some cases where the actual thyroid gland is messed up, but in the majority of cases, it’s due to a malfunctioning liver.
4-5 cups of fluid is probably too much. I usually drink 2-3 cups or less. There have been days where it was really cold outside where I didn’t even drink 8 ounces of fluid.
Try cutting your fluid intake in half, and I bet you see a difference in your body temp and digestion. Try to ONLY drink when really thirsty, and when you do, just take a few sips. Just enough to quench your thirst. Anymore is overkill.
I also had to reduce my sugar intake to a minimal amount to heal my metabolism. Some people say the opposite. But that was definitely the case for me.