

Histamine intolerance is a medical condition that occurs as a result of elevated histamine levels. Summaryĭiamine oxidase (DAO) is an enzyme that helps break down excess histamine in your body, thus easing uncomfortable symptoms, such as nasal congestion, itchy skin, headaches, and sneezing. It naturally occurs in certain foods - especially those that are aged, cured, or fermented like cheese, wine, pickles, and smoked meats ( 1).ĭAO keeps histamine levels in a healthy range to avoid uncomfortable histamine-induced symptoms.

You may also ingest histamine through your diet. If you’ve ever experienced an allergic reaction, you’re probably familiar with common symptoms associated with elevated histamine levels, such as nasal congestion, itchy skin, headaches, and sneezing. Histamine is a naturally occurring compound that helps regulate specific functions of your digestive, nervous, and immune systems. Its primary function is to break down excess histamine in your body ( 1). Diamine oxidase (DAO) is a digestive enzyme produced in your kidneys, thymus, and the intestinal lining of your digestive tract.
