Histamine & Seasonal Allergies

Histamine is a natural component of your immune system, digestive system and your central nervous system. As a neurotransmitter it communicates important messages from your brain to your body.

Ever suffered with seasonal allergies or food allergies? Well histamine is what causes all the symptoms you associate with allergies.That’s because histamines role in the body is to cause an immediate inflammatory response which is a good thing short term!

You may have taken antihistamine medication to relieve your symptoms and this is because antihistamines do exactly that, they block histamine activity.

Issues start to arise if you aren’t able to break histamine down properly resulting in high levels or circulating histamine. Histamine can travel through your bloodstream, and affect your gut, lungs, skin, brain, and lead to a wide range of symptoms such as allergies, rashes, headaches, poor sleep, fatigue, nasal congestion and digestive issues just to name a few. Histamine causes your blood vessels to swell and dilute to find and attack the infection.

The removal of certain foods in combination with the support for specific enzymes that degrade histamine will usually help transform someone’s sluggish histamine breakdown. However it is important to get the root cause and not just merely cut out foods, as many histamine rich foods are good for us and should be enjoyed as part of a healthy diet, unless of course you have been diagnosed as Histamine Intolerant.

Histamine Intolerance Symptoms and Natural Treatment  DR HOUSTON ANDERSON  - FUNCTIONAL MEDICINE  AUTOIMMUNE

What can cause high histamine levels?


Small Intestinal Bacterial Overgrowth SIBO

Leaky gut

GI bleeding


Diamine Oxidase deficiency

Histamine rich foods

Oestrogen Dominance 

In addition to histamine produced Inside your body, there are also a variety of foods that naturally contain histamine, cause the release of histamine or block the enzyme that breaks down histamine ‘Diamine Oxidase’ DA

High Histamine Foods List For Your Histamine-Free Diet

  • Histamine rich foods
  • Fermented alcoholic beverages
  • Fermented foods
  • Vinegar containing foods - pickles, olives
  • Cured meats - bacon, ham, pepperoni
  • Soured foods: sour cream
  • Dried fruits- dates, prunes, raisin, figs
  • Citrus fruit
  • Aged cheese including goats cheese
  • Nuts - walnuts, cashes, peanuts
  • Vegetables - avocado, aubergine, spinach, tomato
  • Smoked fish

How to address histamine intolerance?

  1. Remove high histamine food for 1-3 months.
  2. Consider adding in a digestive enzyme to help break down your food.
  3. Find the root cause of the histamine intolerance
  4. Support the enzyme DIamine Oxidase that helps to break down Histamine

As always please get in touch if you have any questions by emailing Harriett@rootedliving.co.uk