Mast cell activation may explain many cases of chemical intolerance

21st March 2025

Claudia S. Miller, Raymond F. Palmer, Tania T. Dempsey, Nicholas A. Ashford & Lawrence B. Afrin (2021). This article discusses the similarities between Mast Cell Activation Syndrome (MCAS) and Toxicant-Induced Loss of Tolerance (TILT), suggesting that both conditions share overlapping symptoms due to mast cell activation. It proposes that MCAS may provide a biological mechanism for TILT, with both conditions exhibiting multi-system symptoms triggered by environmental exposures. The article concludes that more research should be done to improve our understanding of the connection between TILT and MCs, and of new links between environmental exposures and illness.

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