Effects of cancer induced cachexia and administration of l glutathione on the intestinal mucosa in rat Amino Acids Springer Nature Link Histamine Intolerance & Mast Cell Activation Effects of Dietary Components on Mast Cells: Possible Use as Nutraceuticals for Allergies? Mast cells are hypersensitive immune cells that release histamine and other inflammatory mediatorsoften in response to oxidative stress, environmental toxins, and immune imbalance. Many patients with MCAS have low levels of glutathione.