Beyond the Thyroid podcast

Normal TSH But Still Have Symptoms? Here's What's Missing

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Beyond the Thyroid - Episode 57: Normal TSH But Still Have Symptoms? Here’s What’s Missing

Most of Dr. Gibbs’ patients have been told their thyroid was fine -- sometimes for years, sometimes for decades -- while continuing to feel exhausted, cold, foggy, and unlike themselves.

A normal TSH and T4 show that one part of the thyroid control system is in range. They do not show whether active thyroid hormone is reaching the tissues that need it.

In this episode, Dr. Dana Gibbs responds to a recent popular podcast that dismissed T3 and reverse T3 testing, and explains the two distinct patterns that fall through the cracks of standard thyroid care: subclinical hypothyroidism and what she calls “type 2 hypothyroidism.” She also walks through how thyroid reference ranges were actually built, and why a value can be technically in range while T3 signaling is still insufficient.

The episode closes with a patient story that shows what became possible once the full picture was finally available.

In this episode you’ll learn:

  • Why TSH is a pituitary hormone, not a true thyroid test -- and what it actually tells you
  • Subclinical hypothyroidism: elevated TSH with a free T4 still in range, and why levothyroxine alone often doesn’t fix the symptoms
  • “Type 2 hypothyroidism”: a conversion failure that can exist with a TSH anywhere in the normal range
  • How thyroid reference ranges were constructed and what they left out
  • Why being “in range” doesn’t guarantee that T3 signaling at the tissue level is adequate
  • The reasons T3 conversion can fail: Hashimoto’s inflammation, impaired stress signaling, nutrient deficiencies, and genetic variants in the deiodinase enzyme
  • Why a thyroid diagnosis should not end the search for other contributing causes
  • A patient story: decades of “the thyroid is fine,” and what changed

Also covered in Episode 56: the levothyroxine side of this problem, including the split-dose fix and lab timing.

Free Live Q&A with Dr. Gibbs: October 13, 8pm Central / 9pm Eastern / 6pm Pacific. 

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Episode Highlights

00:00 Normal Labs Not Enough
01:08 Show Intro and Host Story
02:11 Thyroid Clarity Checkup
04:19 Calling Out TSH-Only Thinking
08:07 Two Layers of Control
10:04 Subclinical Hypothyroidism
11:21 Type 2 Low T3 Conversion
12:43 Why Ranges Miss People
14:16 Common Causes and Fixes
17:30 Core Five Lab Panel
19:45 Beyond Thyroid Labs
21:20 Rachel Case Study
23:16 Wrap Up and Next Steps
25:49 Final Outro and Disclaimer

Let's connect! 🔔
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✉️ Email Dr. Gibbs at [email protected] or visit https://www.danagibbsmd.com/ for more information.


Thank you so much for listening! Tune in on the next episode.


The medical information provided in this episode is intended for informational purposes only and should not be construed as medical advice. Always consult a qualified healthcare provider regarding any medical questions or concerns.

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