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Histamine intolerance: what to do when your body reacts to food
Histamine intolerance (HIT) is a condition in which the body is unable to process histamine, whether it comes from foods or is produced in the body. It is not an allergy in the classic sense, but the symptoms are often similar, from rashes and headaches to digestive problems.
How to understand that it may be histamine intolerance
Most often, people notice:
skin redness, rashes, hives;
headache or migraine after certain foods;
bloating, nausea, diarrhea;
rapid heartbeat, low blood pressure;
nasal congestion, difficulty breathing.
Symptoms appear after eating foods high in histamine — wine, aged cheese, smoked meats. If such symptoms recur, you should consult a doctor.
Why does HIT occur?
reduced activity of the enzyme DAO (diamine oxidase), which destroys histamine;
diseases of the digestive system (irritable bowel syndrome, celiac disease, gastritis);
taking medications that block DAO (some antibiotics, anti-inflammatories, antidepressants);
excessive consumption of foods rich in histamine.
What tests to take?
To confirm the diagnosis, the doctor may prescribe:
| Analysis | What is it for? | What does HIT show? |
|---|---|---|
| DAO activity in the blood | Identifies the enzyme that destroys histamine | Low scores confirm intolerance |
| Plasma histamine level | Shows its concentration in the body | Elevated levels are a sign of HIT |
| Complete blood count | Evaluation of the immune response | Possible signs of inflammation |
| Allergy tests | Exclude allergies | If the tests are negative but symptoms are present, HIT is suspected. |
What products should be excluded?
aged cheeses, sausages, smoked meats;
canned fish, dried fish;
alcohol (wine, beer, champagne);
fermented foods (sauerkraut, soy sauces);
chocolate, citrus fruits, strawberries, bananas.
What products can be used?
fresh meat and fish;
vegetables with low histamine content (cucumbers, zucchini, broccoli, carrots);
fruits that rarely cause a reaction (apples, pears, grapes);
cereals - rice, buckwheat, corn;
fresh milk or soft unsalted cheeses.
What to do to control symptoms
Keep a food diary — note which foods provoke reactions.
Follow a low-histamine diet.
Take DAO enzyme supplements as recommended by your doctor.
Use antihistamines only under medical supervision.
Treat concomitant diseases of the gastrointestinal tract.
Living with histamine intolerance
HIT cannot be completely cured, but it can be controlled. The key is careful nutrition, knowledge of "dangerous" foods, and timely diagnosis. Most people experience significant relief after dietary correction and can lead a normal lifestyle.
