In this podcast episode, the focus is on thyroid health, exploring both its proper function and dysfunction. Dr. Mark Hyman highlights the need for a thorough thyroid panel that includes TSH, free T3, free T4, and thyroid antibodies, rather than just relying on TSH levels. He points out that factors such as environmental toxins, stress, gluten, and imbalances in the gut microbiome can greatly affect thyroid function. The functional medicine approach aims to tackle these root issues through dietary changes, supplements, and lifestyle adjustments, which may even reduce the need for medication in some cases. The episode also delves into hyperthyroidism, specifically Graves' disease, discussing its symptoms and the limitations of conventional treatments like methimazole and radioactive iodine.