What Low T3 Has to Do With MCAS, POTS & Dysautonomia

What Low T3 Has to Do With MCAS, POTS & Dysautonomia

Brandy Searcy
Published on: 27/08/2026

Is there a connection between MCAS, POTS and dysautonomia? Low thyroid and low T3 may be an overlooked piece connecting mast cell activation, blood vessel function, orthostatic intolerance and cortisol.

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Low T3, Normal TSH, and Low Thyroid Symptoms: What’s Really Going On

Low T3, Normal TSH, and Low Thyroid Symptoms: What’s Really Going On

Brandy Searcy
Published on: 21/08/2026

This post discusses the intersection between low T3, inflammation, MCAS, POTS and dysautonomia and why looking beyond standard thyroid labs may reveal connections between symptoms that are being treated separately.

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