Physiological links between stress and thyroid health

Medical discussions have focused on the physiological connections between chronic stress, pain, and metabolic health. Initial observations suggest that long-term stress and chronic pain can trigger similar mechanisms, such as low-grade inflammation, and may lead to a state described as “type 2 hypothyroidism” or “cellular hypothyroidism.” In this state, tissues experience reduced effectiveness of thyroid hormones even when blood tests appear normal, resulting in symptoms like fatigue, weight gain, and brain fog.

Subsequent insights have expanded on these connections by highlighting specific indicators of thyroid dysfunction and the physical manifestations of the stress response. Endocrinologists note that both hypothyroidism and hyperthyroidism present distinct symptoms, such as unexplained weight changes and temperature sensitivity. Furthermore, the psoas muscle, sometimes called the “anxiety muscle,” has been identified as a key site for chronic tension during the body’s fight-or-flight response, which can impact posture, breathing, and spinal stability.