There's no single protocol for MCAS. For some patients, viruses or chronic infections keep the immune system on alert. My job is to identify those triggers and use the right tools to Human Lung Mast Cells: Therapeutic Implications in Asthma The Role of Prescriptive Peptides for Chronic GI and Autoimmune Conditions Most people diagnosed with MCAS didn't develop it overnight. Their mast cells were dysregulated long before symptoms appeared. Early life exposures, such as environmental toxins, infections, and even implants, can alter how mast