Could Histamine Be the Cause of Your Migraines?

Understanding histamine could be the answer to your migraines. There is a lot of confusion about histamine and how it can either cause or prevent migraines. Here’s a guide to help you figure out how to control histamine and thus reduce occurrence of migraines.

A Two-Edged Sword

Histamine is an amine (a chemical which is made from an amino acid) that is involved in tasks within the immune and neuroendocrine systems, neurotransmission, gastric secretion, cell life and death, and development. It is part of a local immune response to cause inflammation. It performs several important functions in the bowel and acts as a neurotransmitter or chemical messenger that carries signals from one nerve to another. It is able to affect the immune, digestive and nervous systems by affecting cells in many different parts of the body.

Histamine has a particularly central role in allergic reactions. It causes vasodilation (the expansion of blood vessels) as well as makes capillaries leaky (increased permeability). This causes the characteristic swelling and inflammation associated with allergic reactions. In addition, histamine causes the airways to shrink, which can make breathing difficult.

Histamine plays a major role in the production of stomach acid. It also plays an important role in a part of the brain known as the hypothalamus. According to a 2001 article in Progress in Neurobiology, histamine is crucial in modulating anxiety, the release of stress hormones, and arousal.

One lesser known fact about histamine is that it is released by the body to trigger thirst. When you are dehydrated, your histamine levels are elevated, resulting in suppressed white blood cell production, the very things that help you eliminate allergy responses. So, next time you experience symptoms of allergies, ask yourself if you have been hydrating correctly.

The Link Between Migraines and Histamine

Migraine is defined as a “disorder in which periodic episodes of headache are associated with spells of hypersensitivity of the senses (bright lights, sounds) causing nausea and vomiting”. These headaches are often accompanied by a “migraine aura“, an altered perceptions of reality, such as vertigo, shining lights or temporary blind spots. It might also come with distorted sense of taste and smell, symptoms of paralysis, difficulty in speaking or hearing sounds.

As far as we know, histamine seems to be one of the factors most closely linked to the ailment of migraines. 

An Enzyme Called DAO

Under normal conditions, excess histamine is broken down by specific enzymes, especially diamine oxidase (DAO). The products of histamine breakdown are then excreted via the kidneys in urine. Usually this will ensure that histamine levels do not exceed a person’s “limit of tolerance” (the level above which symptoms develop). However, when the amount of DAO is insufficient, histamine levels rise and typical histamine intolerance symptoms develop. Please see this article.

In a recent study, the prevalence of DAO deficiency in patients with a confirmed migraine diagnosis was measured and it was determined that 87% of the migraine patients had an enzyme deficiency. 

It’s important to note the following:

  • Some foods contain high amounts of histamine.
  • Histamine is also released as part of the digestive process.
  • DAO metabolizes histamine, both what’s in food and what’s released as part of digestion.
  • Some people do not produce enough DAO.
  • Taking DAO as a supplement before eating and/or eating a low-histamine diet may reduce the frequency, severity and/or duration of a person’s migraine attacks.

If you suffer from migraines because of an overabundance of histamine in your body, you may reduce your episodes by:

  1. Following a low-histamine diet (for best results, consult with a qualified naturopath, holistic nutritionist or health coach);
  2. Avoiding DAO blocking foods (such as bananas, raspberries, alcohol, energy drinks, black tea, mate tea, and green tea);
  3. Supplementing with a high-quality DAO enzyme; 
  4. Taking targeted vitamin and mineral supplementation (for best results, consult with a qualified health professional); and
  5. Switching/avoiding medications associated with histamine intolerance, such as most anti-inflammatory and pain medications.

The amount of histamine entering the body from dietary sources can be significantly reduced by following a histamine-restricted diet. A low-histamine diet, plus supplemental DAO should reduce the amount of exogenous histamine entering the body to almost nil.  It is very important to understand that this approach will not reduce the amount of histamine produced within the body.  The effects of this histamine must be addressed by other methods of control such as antihistamines, mast cells stabilizers, and other appropriate therapies depending on the source of the endogenous histamine.


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Distress or Chronic Stress

Distress or chronic stress is uncontrollable, prolonged, or overwhelming stress. Once stress becomes distress, the body manages to survive though not always to thrive. For example, when faced with periods of chronic stress, the body’s immune system function is lowered, and the digestive, excretory, and reproductive systems no longer function the way they should. In a state of distress, the cells of the immune system (and other body systems) are unable to respond normally and produce levels of inflammation which increase the risk of further health issues.


Homeostasis refers to your body’s ability to regulate itself and maintain a comparatively stable internal environment despite external and internal conditions and events.

Your body is designed to be in a state of homeostasis, where all the systems within are functioning optimally.


Stressor is anything that is perceived by the body as challenging, threatening or demanding.

Health Story

In the context of My Wellbeing Compass, your “Health Story” represents the combination of your dis-eases, conditions, symptoms and the history that binds them together. It is multi-layered and multi-dimensional. Unearthing and resolving the root causes at the core of your Health Story is the only way to truly rewrite this Story.

Natural Self-repair Mechanisms

The body is made up of intelligent, living cells that are dynamically connected. They communicate and just know what to do and when to do it in any given situation. They grow, replicate, repair, and age. Every 90 days, the body has a new bloodstream; every year, it manufactures billions of new cells; colon cells refresh every 4 days; the skin is entirely regenerated every 2-3 weeks; white blood cells regenerate in about 1 year; the liver renews itself at least once every 2 years; and the skeleton replaces its cells entirely every 10 years.

You are an incredibly complex, interactive, and dynamic living organism that is well-equipped with self-repair mechanisms that can fight infections, eliminate toxins, fix damaged DNA, destroy cancer cells, and even slow down aging.

This natural self-healing ability (also referred to as cellular intelligence or body’s innate intelligence) explains spontaneous remissions from seemingly “incurable” diseases.


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