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</html><description>DAO and histamine The DAO enzyme, short for &#x2018;diamine oxidase, plays a crucial role in histamine metabolism within the body. Histamine is a biogenic amine involved in various physiological processes, including immune response, neurotransmission, and gastric acid secretion. However, excessive levels of histamine can lead to adverse effects, such as allergic reactions, inflammation, and gastrointestinal [&hellip;]</description><thumbnail_url>https://www.intoleran.com/us/wp-content/uploads/sites/17/2021/07/intoleran-logo.png</thumbnail_url><thumbnail_width>1277</thumbnail_width><thumbnail_height>308</thumbnail_height></oembed>