what does the molecule histamine do in allergies
Histamine Intolerance. Histamine is a chemical which occurs naturally in certain foods. This is also one of the chemicals that is released in the body as part of an allergic reaction, causing the typical itching, sneezing, wheezing and swelling allergy symptoms.ertain foods (even food that is low in histamine) can stimulate the release of histamine from mast cells in your body (a type of immune cell). These foods include: 1  Bananas. 2  Tomatoes. 3  Strawberries. 4  Nuts.