Mast cells can be more easily triggered in the presence of high estrogen or estrogen-mimicking compounds. Histamine can also trigger mast cell degranulation. Together, this can cause a lot of symptoms related to mast cell activation.
Interleukin-13 (IL-13) is a signaling molecule important in the immune response. Excessive IL-13 can tip you toward a Th2-dominant immune response, and variants increase the risk of allergies and asthma.