What Are Histamines?
\nMost people have heard of antihistamines, the allergy medications, but fewer know what histamines do. Histamines are natural chemicals produced by the immune system. They help the body respond to allergens\u2014substances like pollen, dust, or pet dander\u2014by triggering sneezing, itching, or tearing. This reaction protects the body from potential threats.<\/p>\n
Sometimes, however, histamines overreact. They can treat harmless substances as dangers, leading to allergy-like symptoms. That\u2019s where antihistamines come in\u2014they suppress this overreaction.<\/p>\n
What Is Histamine Intolerance?
\nHistamine intolerance shares symptoms with allergies but can affect other bodily functions as well. Signs vary depending on the individual, but common symptoms include:<\/p>\n
Digestive problems<\/p>\n
Fatigue<\/p>\n
Headaches or migraines<\/p>\n
Heartburn<\/p>\n
Hives<\/p>\n
Irregular menstrual cycles<\/p>\n
Nausea<\/p>\n
Sinus issues and congestion<\/p>\n
Watery eyes<\/p>\n
Vomiting<\/p>\n
Severe cases may include:<\/p>\n
Abdominal pain<\/p>\n
Anxiety<\/p>\n
Difficulty breathing<\/p>\n
Dizziness<\/p>\n
High blood pressure<\/p>\n
Irregular heart rate<\/p>\n
Trouble regulating body temperature<\/p>\n
Swollen tissues<\/p>\n
What Causes Histamine Intolerance?<\/p>\n
Histamine intolerance doesn\u2019t mean the body cannot handle histamines; it means the body has too much. Histamines perform several key functions, including aiding digestion by releasing stomach acid and sending signals to the brain.<\/p>\n
The enzyme diamine oxidase (DAO) normally breaks down histamine during digestion. A DAO deficiency prevents this process, leading to excess histamine in the body. DAO deficiencies can be caused by:<\/p>\n
Gastrointestinal disorders<\/p>\n
Medications that interfere with DAO production<\/p>\n
Histamine-rich foods<\/p>\n
Foods that trigger histamine release<\/p>\n
Foods that block DAO enzymes<\/p>\n
Bacterial overgrowth in the gut<\/p>\n
Kerry Torrens, BSc, explains: \u201cHistamine intolerance is unlike other allergies. It\u2019s not a reaction to histamine itself but to the fact that the body contains too much of it. Everyone has a personal \u2018histamine bucket.\u2019 Once it overflows, symptoms appear.\u201d<\/p>\n
Managing Histamine Levels with Diet<\/p>\n
Diet plays a major role in managing histamine intolerance. Certain foods can increase histamine or block DAO enzymes. These include:<\/p>\n
Alcohol and fermented foods<\/p>\n
Black tea, green tea, energy drinks<\/p>\n
Fruits like avocados, bananas, papaya, dried fruits, and citrus<\/p>\n
Vegetables like eggplant, spinach, and tomatoes<\/p>\n
Beans and nuts<\/p>\n
Processed or smoked meats<\/p>\n
Shellfish<\/p>\n
Aged cheese<\/p>\n
Chocolate<\/p>\n
Food dyes and additives<\/p>\n
There\u2019s no permanent \u201chistamine-free\u201d diet. Work with a dietitian to find a plan that works for you. Focus on low-histamine foods such as:<\/p>\n
Gluten-free grains (rice, quinoa)<\/p>\n
Non-citrus fruits (avoid avocado and bananas)<\/p>\n
Most vegetables (excluding eggplant, spinach, and tomatoes)<\/p>\n
Eggs<\/p>\n
Dairy substitutes like almond milk<\/p>\n
Fresh meat and fish<\/p>\n
Cooking oils like olive oil<\/p>\n
Diagnosis and Treatment<\/p>\n
If you suspect histamine intolerance, don\u2019t self-diagnose. Symptoms resemble allergies, infections, or other disorders. A doctor may:<\/p>\n
Recommend an elimination diet for 14\u201330 days<\/p>\n
Slowly reintroduce foods to test reactions<\/p>\n
Conduct a blood test for DAO deficiency<\/p>\n
Antihistamines can help relieve symptoms but do not reduce the body\u2019s histamine load. They provide temporary relief but are not a complete solution.<\/p>\n","protected":false},"excerpt":{"rendered":"
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