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Histamine Intolerance

What is histamine intolerance?

Histamine intolerance is not a sensitivity to histamine, but an indication that you’ve developed too much of it.

Histamine is a chemical responsible for multiple major functions:

  • communicates messages to your brain

  • triggers release of stomach acid to help digestion

  • releases after injury or allergic reaction as part of your immune response

When histamine levels get too high or when it can’t break down properly, it can affect your normal bodily functions.

Symptoms of Histamine Intolerance


Histamine is associated with common allergic responses and symptoms. Many of these are similar to those from a histamine intolerance.

While they may vary, some common reactions associated with this intolerance include:

In more severe cases of histamine intolerance, you may experience:​

(fr Healthline

Histamine Intolerance (HIT) has been used colloquially to describe histamine reactions related to dietary histamine levels exceeding the body's ability to remove that histamine efficiently enough.

I have found that reducing histamine for just 2 to 4 weeks, you can begin slowly introducing histamine-rich foods back into your meal plan, one at a time. Talk to your doctor or nutritionist about how best to reintroduce these foods.

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