The adrenal glands and the thyroid so closely influence each other’s function that they are assessed together. The adrenal glands control our response to stress while the thyroid controls our metabolic rate. Long term overstimulation of the adrenals can contribute to an under functioning thyroid.
Suboptimal thyroid function occurs when there is either too much or too little functional thyroid hormone. Most concerns that present are in relation to underactive thyroid as overactive thyroid is less common and will require the attention of your G.P.