People all over the world suffer from histamine intolerance without being aware of it. We itch, sneeze, suffer from joint pain, inflammation, sleep disorders, irritability, anxiety, bowel disease, diarrhea, flatulence, stomach pain, heartburn and acid reflux, nausea, bloating and other digestive problems, eczema, psoriasis, tissue swelling, urticaria (hives), itching skin, itching scalp, sinusitis, runny nose, puffy eyes, hay fever, asthma, and breathing difficulties, or endure tension headaches, migraines, fuzzy thinking, dizziness, irregular heartbeat, painful periods (women), sudden drops in blood pressure, faintness or flushing, immediately after the consumption of histamine-rich foods, or many hours afterwards. Histamine is colorless, odorless and tasteless - invisible and undetectable except by scientific analysis, and yet crucial to our well-being. Individual histamine tolerance thresholds vary greatly. A range of circumstances including our genes, our environment, our diet and...