Can thyroid disease lead to mental changes?

Yes: An over or under active thyroid could cause or unmask certain mental health disorders. In fact psychiatrists always screen thyroid function when evaluating such patients. Additionally, thyroid dysfunction could also worsen preexisting psychiatric disease if not appropriately treated.

Yes: Hypothyroidism leads to mental slowing, fatigue, forgetfullness and hyperthyroidism can lead to anxiety, irritability, and jitteriness if uncontrolled.