Conversations Unplugged

In this conversation, Christian Drapeau interviews McCall McPherson, a thyroid specialist and the founder of Modern Thyroid Clinic. She shares the story behind the clinic: at 27 she was going to bed at 3:30 every afternoon and was told her numbers were fine and that she should eat less and exercise more. After months on a waiting list to see an integrative medicine doctor, she had her life back.

McPherson explains that thyroid testing as commonly practiced is too narrow. Her own TSH was normal, which she calls the central misunderstanding — a person can be genuinely disabled and still fall inside the standard reference range. The fuller picture she looks for includes TSH, free T4, free T3, reverse T3, and the Hashimoto's antibodies, TPO and thyroglobulin.

She describes the symptom cluster she watches for: fatigue, brain fog, weight gain, hair loss, cold intolerance, dry skin, low libido and sluggish digestion. Medicine tends to call these nonspecific, but in her experience five or six together point clearly to a thyroid problem. She advocates annual screening, noting that risk rises with age, after childbirth and through perimenopause and menopause, and puts her success rate above 90 percent with patients who have often already seen many doctors.

The episode closes on the limits of numbers alone. Normalizing T3 and T4 can leave someone correct on paper and still exhausted, which is why she aims to restore the thyroid's function as an organ and reduce the autoimmune burden she links largely to the gut. She and Drapeau end by announcing a collaboration exploring what stem cells may offer a damaged thyroid.