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. Methylation cycle hypothesis MEpedia Glutathione: Why is it important for detox & how to improve the amount in your body RealTime Laboratories MTHFR and LC, CFS, POTS, MCAS, SIBO, EDS: Methylating the Alphabet Article (Preprint v1) by Patrick Chambers Qeios Glutathione: pharmacological aspects and implications for clinical use Geriatric Care