Histamine intolerance is a condition that causes a surprisingly diverse range of symptoms, including digestive problems, migraines and headaches, allergic rhinitis, skin conditions, pain, and more. It connects all of these seemingly unrelated issues to conditions commonly associated with allergy, such as (neuro-)dermatitis, eczema, psoriasis, asthma, and urticaria.<\/p>\n
If you suffer from one or more of these allergy-associated symptoms – hay fever, allergic rhinitis, neurodermatitis, dermatitis, urticaria, eczema, psoriasis, asthma, or others – you need to know about this condition. There is a strong chance that histamine intolerance is influencing when and how severely your symptoms appear.<\/p>\n
In addition, histamine intolerance frequently affects people who suffer from digestive issues such as irritable bowel syndrome (IBS), Crohn’s disease, ulcerative colitis, food sensitivities, and other gastrointestinal conditions.<\/p>\n
While histamine intolerance was once considered poorly recognized, clinical awareness has grown significantly in recent years, with more practitioners now screening for it as part of functional and integrative assessments.<\/p>\n
Histamine is a molecule produced by the body itself and stored, among other places, in mast cells – specialized immune cells that can release histamine into the bloodstream at any moment. Histamine plays numerous physiological roles in the body, including:<\/p>\n
Importantly, histamine is also released from mast cells into the bloodstream during emotional stress and fear responses.<\/p>\n
Beyond the body’s own production, bacteria also produce high levels of histamine during various processes – protein breakdown, vegetable fermentation (such as pickles and sauerkraut), and the aging of cheeses and wine. Histamine is also naturally present in certain foods, such as bananas and avocados.<\/p>\n
To neutralize histamine entering the body through the digestive system, the small intestine contains an enzyme called diamine oxidase (DAO). This enzyme breaks down histamine and prevents its absorption into the bloodstream. However, for DAO to function fully, it requires adequate levels of copper<\/strong> and vitamin B6<\/strong>.<\/p>\n In people with histamine intolerance, the DAO enzyme does not work properly, allowing dietary histamine to be absorbed into the bloodstream. This impaired function can result from:<\/p>\n Additional conditions that raise histamine levels in the body include Helicobacter pylori<\/em> infection and increased intestinal permeability (“leaky gut”).<\/p>\n Once histamine from food is absorbed into the bloodstream, it joins the histamine already released from mast cells due to other factors – primarily emotional stress and\/or allergic reactions.<\/p>\n Here is the bottom line: if you occasionally or regularly experience symptoms driven by histamine, those symptoms will worsen whenever your blood histamine levels rise.<\/p>\n Blood histamine levels can increase due to any of the following:<\/p>\n Imagine this scenario: you are under intense stress, you eat foods you are sensitive to, and at the same time you have a vitamin B6 deficiency. What happens?<\/p>\n This is the core problem of the entire syndrome – and the most important takeaway from this article.<\/strong> When multiple histamine-raising factors converge, your symptoms can worsen dramatically.<\/p>\n That is why understanding each factor that raises histamine in your bloodstream is so powerful. Once you identify your personal triggers, you can manage your symptoms far more effectively.<\/p>\n For example, if you are currently suffering from hay fever (because it is the season) and you have also had a stressful day at work, it is probably not the best time to eat aged cheese, drink wine, or consume other high-histamine foods. On the other hand, during a calm, low-stress period with no active allergic exposure, you may tolerate those same foods without any problem.<\/p>\n A low-histamine diet is a foundational step. This means reducing or temporarily eliminating foods known to be high in histamine – aged cheeses, fermented foods, cured meats, certain fish, alcohol (especially wine and beer), and foods that trigger non-specific histamine release. Work with a qualified practitioner to design an elimination protocol tailored to your needs, since overly restrictive diets can lead to nutritional deficiencies.<\/p>\n Because DAO requires copper and vitamin B6 to function, ensuring adequate levels of these nutrients is essential. A practitioner can test your levels and recommend appropriate supplementation if needed. DAO enzyme supplements taken before meals are also available and may help some individuals tolerate dietary histamine.<\/p>\n Treatment should also address root causes of impaired DAO function: healing intestinal inflammation, treating Helicobacter pylori<\/em> infection, reducing intestinal permeability, and reviewing any medications that may inhibit DAO.<\/p>\n Diet, supplements, environment, and lifestyle can all shape your genetic destiny. When you know what your genes need, you can choose a diet and lifestyle that optimize your health – the difference between struggling under a burden of symptoms or living a healthy, vital life full of energy. Stress management practices – such as deep breathing, meditation, regular physical activity, and quality sleep – directly reduce mast cell activation and help keep histamine levels in check.<\/p>\n If you suspect histamine intolerance, consult a healthcare practitioner experienced in functional medicine or clinical nutrition. Diagnosis typically involves symptom tracking, dietary challenge protocols, and in some cases blood tests for DAO activity or histamine levels. Trying to find out more about your individual triggers – including specific genetic challenges – is not always straightforward. According to Dr. Ben Lynch, you can easily be swamped by confusing information and contradictory recommendations. A qualified practitioner can help you navigate this process effectively.<\/p>\n Histamine intolerance causes migraines, digestive issues, skin rashes & more. Learn the causes, symptoms, and natural treatment strategies.<\/p>\n","protected":false},"author":3,"featured_media":666,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"word_count":1179,"read_time":7,"subtitle":"Understanding the enzyme deficiency behind unexplained allergic reactions - and what you can do about it","editor_feedback":"","takeaway_1":"Histamine intolerance is a condition in which the body cannot break down histamine efficiently, leading to a wide range of symptoms - from migraines and digestive issues to skin rashes and breathing difficulties.","takeaway_2":"The DAO enzyme in the small intestine is your main defense against dietary histamine - and it needs adequate copper and vitamin B6 to function properly.","takeaway_3":"Symptoms worsen when multiple histamine-raising factors combine: allergies, stress, high-histamine foods, and impaired DAO activity.","takeaway_4":"Understanding your personal triggers is the key to gaining control over your symptoms.","takeaway_5":"Diet, supplements, environment, and lifestyle choices can all shape how your body handles histamine, a principle at the heart of epigenetics. According to Dr. Ben Lynch, when you know what your genes need, you can choose a diet and lifestyle that optimize your health.","faq_q_1":"Is histamine intolerance the same as a food allergy?","faq_a_1":"No. Food allergies involve an immune response (typically IgE-mediated) to a specific food protein. Histamine intolerance is about the body's inability to break down histamine efficiently - regardless of its source. The two can coexist, but they are different mechanisms.","faq_q_2":"Which foods should I avoid to reduce histamine?","faq_a_2":"High-histamine foods include aged cheeses, fermented vegetables (sauerkraut, pickles), cured and smoked meats, certain fish (especially if not freshly caught), alcohol (wine, beer), vinegar, and some fruits like bananas and avocados. Some foods also trigger non-specific histamine release from mast cells.","faq_q_3":"How can I support my DAO enzyme levels naturally?","faq_a_3":"Ensuring adequate copper and vitamin B6 intake is essential, as these are cofactors for DAO. Healing any intestinal inflammation, avoiding alcohol, and reviewing medications that inhibit DAO can all help. DAO enzyme supplements taken before meals may also be beneficial.","faq_q_4":"Do I need to take copper or vitamin B6 supplements, and how much?","faq_a_4":"This depends on your individual levels, which should be tested by a qualified practitioner. Supplementation should always be guided by professional advice, as excessive copper intake can be harmful.","faq_q_5":"Which medications can inhibit the DAO enzyme?","faq_a_5":"A wide range of medications can inhibit DAO, including certain painkillers, antidepressants, antihistamines (paradoxically), heart medications, and antibiotics. If you suspect a medication is contributing to your symptoms, discuss it with your healthcare provider - never stop a medication without professional guidance.","source_1_name":"Amy Myers \u2013 Histamine Intolerance: All You Need to Know","source_1_url":"https:\/\/www.amymyersmd.com\/blogs\/articles\/histamine-intolerance","source_2_name":"Mark Hyman \u2013 Is Histamine Intolerance The Cause Of Your Mysterious Symptoms?","source_2_url":"https:\/\/drhyman.com\/blogs\/content\/podcast-hc41","source_3_name":"Dr. Josh Axe \u2013 Does Histamine Intolerance Cause Allergies, Headaches & Bloating?","source_3_url":"https:\/\/draxe.com\/health\/histamine-intolerance\/","source_4_name":"","source_4_url":"","source_5_name":"","source_5_url":"","footnotes":""},"categories":[351],"tags":[393,398,364],"admin-flag":[],"class_list":["post-15","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gut-health","tag-chronic-stress-en","tag-food-sensitivity","tag-histamine"],"_links":{"self":[{"href":"https:\/\/health-me.co.il\/en\/wp-json\/wp\/v2\/posts\/15","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/health-me.co.il\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/health-me.co.il\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/health-me.co.il\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/health-me.co.il\/en\/wp-json\/wp\/v2\/comments?post=15"}],"version-history":[{"count":4,"href":"https:\/\/health-me.co.il\/en\/wp-json\/wp\/v2\/posts\/15\/revisions"}],"predecessor-version":[{"id":1297,"href":"https:\/\/health-me.co.il\/en\/wp-json\/wp\/v2\/posts\/15\/revisions\/1297"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/health-me.co.il\/en\/wp-json\/wp\/v2\/media\/666"}],"wp:attachment":[{"href":"https:\/\/health-me.co.il\/en\/wp-json\/wp\/v2\/media?parent=15"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/health-me.co.il\/en\/wp-json\/wp\/v2\/categories?post=15"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/health-me.co.il\/en\/wp-json\/wp\/v2\/tags?post=15"},{"taxonomy":"admin-flag","embeddable":true,"href":"https:\/\/health-me.co.il\/en\/wp-json\/wp\/v2\/admin-flag?post=15"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\n
Why This Matters: The Cumulative Histamine Effect<\/h2>\n
What Causes Blood Histamine Levels to Rise?<\/h3>\n
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The Combination Problem: When Multiple Triggers Stack Up<\/h2>\n
Treatment and Management of Histamine Intolerance<\/h2>\n
Dietary Adjustments<\/h3>\n
Supporting DAO Enzyme Function<\/h3>\n
Addressing Underlying Causes<\/h3>\n
Lifestyle and Epigenetic Factors<\/h3>\n
When to Seek Professional Help<\/h3>\n
Sources<\/h2>\n
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