I Have an Under-Active Thyroid. What Is the Best Thing to Help Fatigue and Brain Fog?

15 Dec 2025 · 6 min
Episode

15 Dec 2025 · 6 min

0:00

Podcast episode (Ask the Health Expert) hosted by JJ Virgin featuring Dr. Alan Christensen answering a listener (Irma Blanco) with an underactive thyroid who is taking 90 mg Armour and experiencing fatigue and brain fog. Dr. Christensen recommends optimizing thyroid function while avoiding excess iodine (he cites an iodine intake window of roughly 30–100 micrograms for best odds of reversal). He notes 90 mg Armour already supplies about 190 micrograms of iodine, so additional iodine sources should be limited (iodized salt, dairy, egg yolks, certain vegetables, processed grains, some cosmetics). He advises ensuring medication dose is appropriate and screening for common comorbid contributors such as iron deficiency (stating ~80–92% of people with thyroid disease have suboptimal iron), autoimmune gastritis, parathyroid disease, and sleep apnea. Episode also contains multiple sponsor ad reads and a closing subscribe prompt.

Questions this episode answers

About 30–100 micrograms (µg) of iodine intake.

About 190 micrograms (µg) of iodine.

Approximately 80% to 92%.

December 3, 2020.

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