Tyramine is a product of tyrosine
decarboxylation that occurs during pickling, ferment
ing, aging and the curing and smoking
of foods. Many folks think that it is a hidden cause of recurrent headache
Tyramine is degraded by the MAO enzymes in the body, and severe hypertension can occur if an MAO inhibitor is combined with one of the many tyramine-containing food items such as beer and aged cheeses.