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Thyroid Disorders

Thyroid Disorders

When treating Hashimoto’s, how essential is it to limit goitrogenic foods? The patient is taking Synthroid at 88 micrograms per day. Her TSH is 3.96. T3 and T4 are in range, but her TPO is 85.

Chris Kresser: I believe we’re going to talk about this soon in the exposome unit, but when it comes to...

In a patient with high free cortisol and low metabolized cortisol, we were taught this week that thyroid function could play a role. Can you explain how? Maybe I mistaught myself, but I thought adrenal function worsened thyroid dysfunction. Maybe it’s bilateral, but could you specifically explain the mechanism of action for thyroid dysfunction inhibiting the metabolism of free cortisol? Separately, via the DUTCH testing, I’ve superficially learned that liver dysfunction can also negatively impact this conversion. What kind of liver dysfunction? Are we talking about detoxification or something else?

Chris Kresser: It’s true. High free cortisol and low metabolized cortisol, hypothyroidism is one of the causes of that imbalance,...

For hypothyroid patients, do you check serum iodine and selenium levels? Should we recommend patients to take foods containing these nutrients or even supplement without testing, given the narrow therapeutic range of especially selenium?

Chris Kresser: Let’s talk about iodine first. I do test for iodine, but I do it based on diet. If...

A 27-year-old female. She has an elevated TSH. Her TSH was 5.5, and then her total T3 was 1.3. Free T4 was 14 picomoles per liter. Ran DUTCH panel, altered diet to a Paleo template, introduced stress management techniques. Free and metabolized cortisol in the normal ranges. Elevated beta and alpha pregnanediol. Patient metabolizing through the 5-alpha pathway, though no androgenic effects are noticed. Retested TSH six weeks after the above intervention. Now it’s 6.13. Patient now has energy at work and in the morning, no longer feels as though she needs to sleep until noon on weekends, but the doctor is insisting on thyroid treatment. Unsure where to go from here.

Dr. Amy Nett: It sounds like she had … I think this is subclinical hypothyroidism, without having the reference ranges...

How do you tell exactly if hypothyroidism is autoimmune in nature? What would levels of TPO antibodies need to be? I’m asking because Chris talked about possibly using an AIP diet and how possibly people with Hashimoto’s don’t always respond well to iodine, but often it’s OK if you add selenium. How do you monitor their response to iodine, and how do you check their selenium levels via blood sample for both iodine and selenium? How long after trying to introduce iodine would you test their levels, and what dose would you try adding in the iodine, say, by kelp capsules or adding seaweed in the diet?

Dr. Amy Nett: I’m glad we get to follow up on this because, Laura, I think you and I were...

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