Mast Cell Activation Syndrome (MCAS)

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.

Mast Cell Activation Syndrome (MCAS)Hashimoto's thyroiditis and low thyroid functionPOTS, Dysautonomia, and Orthostatic Intolerance

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.

Mast Cell Activation Syndrome (MCAS)POTS, Dysautonomia, and Orthostatic Intolerance

Is Your Morning Thyroid Hormone Tanking your DAO enzyme and making MCAS worse?

Brandy Searcy

Published on: 26/05/2026

On thyroid replacement hormone and still struggling with severe MCAS flares? Discover the link between thyroid hormone, cortisol, and mast cell activation and a few key considerations for supporting healthy histamine clearance.

Mast Cell Activation Syndrome (MCAS)

Estrogen Dominance, Interstitial Cystitis, and Adrenal Fatigue

Brandy Searcy

Published on: 06/04/2026

What's the link between estrogen dominance, adrenal fatigue, and chronic UTI/interstitial cystitis flares? Find out in this post.

When Your Labs Say You're FineMast Cell Activation Syndrome (MCAS)Interstitial Cystitis and chronic UTI