A 38 year old with severe PMS took DIM and broccoli sprouts for 8 weeks with zero improvement. DUTCH testing showed normal metabolite levels, but genetic analysis revealed double mutations in CYP1B1 and CYP3A4. PDF) Histamine and histamine intolerance The Stable Gastric Pentadecapeptide BPC 157 Pleiotropic Beneficial Activity and Its Possible Relations with Neurotransmitter Activity Here is how I've helped thousands of people heal from histamine intolerance and mast cell activation (which is also a major part of dysautonomia, POTS and long covid). These conditions can drive Histamine Intolerance 101 Dr. Becky Campbell The role of nutritional factors in exercise induced bronchoconstriction: a narrative review American Journal of Physiology Regulatory, Integrative and Comparative Physiology American Physiological Society