Whilst both the thyroid and the adrenals share a common controller - the pituitary - and so we often see problems with both, there is no evidence that the adrenal controls the thyroid or vice versa. It would turn the pathology of pituitary disease on its head. We can easily measure the output of the adrenals so if this were the case we would see it and we dont. Anyhow, failure of the adrenals is called Addisons disease. It was common in the 1800s with TB and the like. Death follows in a month or so. We dont see many people with thyroid disease coming to grief if under medical supervision.
Sorry to be a killjoy, but uncontrolled hypo or hyperthyroidism is dangerous. If your thyroid is over or under active you need to see a doctor. Advising people to change their diet instead is just
