Scientists linked chronic fatigue and MCAS to a deficiency in butyrate-producing bacteria. The Path Back to Safety by Angela Ashton now available on Amazon. MCAS, CFS, Gut Microbiome

Mast cells are a type of immune cell that protect your body from perceived threats. They release chemicals like histamine, cytokines, and other inflammatory mediators to trigger inflammation, alert the body to danger, and help heal injuries.