Is Mast Cell Activation Syndrome Curable?

By: Brian Karr · Co-Founder & Chief Inspection Officer, We Inspect MCAS is not curable the way a bacterial infection is curable. But remission is well-documented. Real, lasting remission. The patients who see the most significant improvement share one thing: they found and removed the environmental trigger keeping their mast cells activated. For a substantial […]

MCAS Neurological Symptoms: When Mast Cells Attack the Brain

By: Brian Karr · Co-Founder & Chief Inspection Officer, We Inspect Mast cell activation syndrome produces neurological symptoms because mast cells are present throughout the central nervous system. When activated — by mold, mycotoxins, food triggers, or stress — they release histamine and inflammatory mediators that penetrate brain tissue, drive neuroinflammation, and disrupt the neurotransmitter […]

Mold and MCAS: Is Your Home Triggering Mast Cell Activation?

By: Brian Karr · Co-Founder & Chief Inspection Officer, We Inspect Yes, mold exposure is one of the most consistently documented environmental triggers for mast cell activation syndrome. Mycotoxins and fungal components produced by water-damaged buildings activate mast cells through non-IgE immune pathways, triggering histamine release, systemic flares, and the kind of multi-organ reactivity that […]

How to Test for Mast Cell Activation Syndrome

By: Brian Karr · Co-Founder & Chief Inspection Officer, We Inspect Testing for mast cell activation syndrome requires collecting specific blood and urine markers during or immediately after a reaction — not days later when levels have normalized. The three core diagnostic markers are serum tryptase, 24-hour urine N-methylhistamine, and 24-hour urine prostaglandins. Most standard […]

MCAS Treatment: Why the Environmental Trigger Comes First

By: Brian Karr · Co-Founder & Chief Inspection Officer, We Inspect Most MCAS treatment plans start with antihistamines, mast cell stabilizers, and dietary changes. Those tools have value. But if hidden mold in your home is still driving mast cell activation, symptom management alone won’t hold. Identifying and eliminating the environmental source has to come […]

7 Root Causes of MCAS and Why Mold Is Number One

By: Brian Karr · Co-Founder & Chief Inspection Officer, We Inspect Mast cell activation syndrome has seven root causes: mold and mycotoxin exposure, chronic infections, genetic mutations, gut dysbiosis, hormonal disruption, nervous system dysregulation, and chemical sensitization. Most people with MCAS have more than one active at the same time. Mold ranks first because it […]

MCAS Symptoms: The Complete Guide to Mast Cell Activation Syndrome

By: Brian Karr · Co-Founder & Chief Inspection Officer, We Inspect Most people with MCAS have seen specialists across multiple disciplines for years without a definitive answer — because nobody looked at their environment. MCAS (mast cell activation syndrome) causes multi-system flares: skin reactions, digestive attacks, heart palpitations, brain fog, and fatigue that can be […]