Why Your THYROID Medication Isn't Working (And What To Do Instead)

Still Gaining Weight on Thyroid Medication? Here’s the Hidden Reason.

Far too many patients start levothyroxine hoping for better energy and weight loss… only to feel exactly the same.

In this must‑watch video, Dr. Mark Stengler explains why the problem often isn’t you — it’s your T3 levels, the active thyroid hormone most doctors never check.

Inside the video, you’ll learn:

✅ Why standard thyroid meds (T4 only) don’t work for everyone
✅ How poor T4‑to‑T3 conversion stalls metabolism
✅ The blood tests you must request: Total T3 + Free T3
✅ How nutrients like selenium support thyroid conversion
✅ When adding or switching to T3 medication makes all the difference

👉 If your metabolism still feels “stuck” on thyroid meds, this video could finally explain why — and how to fix it.

CHAPTERS

‍00:00 – Why Thyroid Medication Might Not Help Weight Loss

‍00:26 – Most Common Thyroid Medication (T4)

‍00:46 – How T4 Converts to T3

‍00:57 – Why T3 Is the Active Hormone

‍01:17 – Low T3 and Weight Loss Struggles

‍01:36 – Blood Tests You Should Request

‍02:17 – Ways to Improve Low T3 Levels

‍02:35 – Medication Options for T3

‍03:01 – Benefits of Optimizing T3 Levels

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