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Are avocados high in histamines?

High histamine foods include fermented foods, alcohol, aged cheeses, eggplant, avocado, citrus foods, dried fruit, legumes, and processed meats.

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Histamine is a chemical in the body that acts as a messenger in the immune system. If you have allergies, an allergen triggers histamine production. When this happens, histamine over activates, producing allergy symptoms like sneezing, itchy and watery eyes, and rashes. Histamine is also present in some foods. Histamine intolerance has never been proven to be a true medical disorder, but some people think that they feel better when they avoid some of these foods. As long as you are able to continue eating a well-balanced diet, it may be okay to avoid these histamine-containing foods, but most people do not need to. This article explains foods with high levels of histamines and how to eat a low-histamine diet.

High Histamine Foods

High histamine foods are often aged, fermented, or soured. They include dairy products, specific fruits and vegetables, processed meats, and alcohol.

Fermented Food

Fermented foods are foods made through the action of bacteria, yeast, fungi, and their enzymes, which oxidize carbohydrates and release energy. These microorganisms may be naturally present in foods. Fermentation requires the correct amount of microorganisms, proper temperature, pH level (the balance of acid and alkaline), and moisture content.

Examples of fermented foods include:

Kefir

Yogurt

Kombucha

Kimchi

Sauerkraut

Tempe

Miso

Sourdough bread

Alcohol

Alcohol is a high histamine beverage. While some alcohols are a bigger culprit than others (red wine, for example), some people who are concerned about histamine ingestion will avoid all of them.

Examples of alcoholic beverages include:

Wine

Beer

Hard cider

Liquor

Processed Meat

Processed meats have been salted, fermented, cured, smoked, or otherwise processed to improve the length of preservation. These kinds of meats are high in histamines. In addition, they are also a Group 1 carcinogen, which means there is evidence they can cause cancer. So, there is more than one reason to limit them in your diet.

Examples of processed meat include:

Hot dogs

Ham

Sausages

Beef jerky

Canned meat

Aged Cheese

Research has found that certain factors can influence the amount of histamine in cheese, including:

Bacterial starter culture

pH level

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Salt level

Storage temperature

Ripening time

Aged cheeses have the highest levels of histamine. That’s because, during the aging process, proteins break down into histamine. These kinds of cheeses include:

Hard cheese like parmesan, cheddar, romano

Blue cheeses aged with bacteria, like gorgonzola

Stinky cheeses ripened with bacteria, like Limburger

Dried Fruit

While dried fruits are packed with nutrients, they are also high in histamine. Common dried fruits include:

Raisins

Cherries

Mangoes

Apricots

Apples

Bananas

Eggplant

Eggplants are a nightshade food that some people are sensitive to. Nightshades have high alkaloids (a phytochemical produced by plants for protection).

Avocado

Avocado is a fruit that is high in healthy fats. For those choosing to avoid histamines in their diet, avocado is one of the foods that they choose to avoid. Guacamole is a common food that contains avocado.

Legumes

Legumes are different than tree nuts. Instead of growing from trees, they grow in pods as edible seeds. Some, but not all, are high in histamines. Legumes include:

Peanuts

Soybeans

Peas

Kidney beans

Chickpeas

Green beans

Citrus Fruit

Citrus fruits are those that include the molecule citric acid. While not necessarily high in histamine, some people choosing a low histamine diet also choose to avoid them.

Citrus fruits include:

Oranges

Lemons

Limes

Spoiled Fish

Histamine toxicity is a form of food poisoning called scombroid poisoning that occurs from eating spoiled fish. Some fish like mackerel and tuna have high levels of the amino acid histidine, which bacteria can convert to histamine.

Certain spoiled fish are more prone to causing histamine toxicity, including:

Tuna

Mackerel

Mahi-mahi

Anchovy

Herring

Bluefish

Amberjack

Marlin

Histamine Intolerance

Histamine intolerance is also called food histaminosis and hypersensitivity to food histamine, but it has not been verified as a true medical disorder. Some people think they feel better when avoiding certain high-histamine foods. Still, when healthcare providers tried to verify this disorder with double-blind, placebo-controlled challenges, they could not tell the difference. While there are a variety of theories on who may be affected and how this may work in the body, none of it has been proven. Unlike lactose intolerance, which is known and proven to be caused by lactase deficiency, no verifiable disorder has been identified for the processing of histamine in the human body. More research is needed. The symptoms that some people attribute to histamine intolerance, an entity that is not medically proven to exist, include:

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Bloating

Diarrhea

Abdominal pain

Constipation

Headaches

Dizziness

Heart palpitations

There are many reasons that people may have these symptoms, and if bothersome, it is important to seek medical advice rather than trying to self-diagnose with a disorder that has not been medically proven to exist.

Low-Histamine Diet

Some people choose a low-histamine diet. This diet reduces the amount of high-histamine foods and those foods that can trigger a buildup of histamine in the body. You limit or avoid high-histamine foods on a low-histamine diet, including those listed above. In addition, you incorporate whole, nutritious foods, including:

Fruits except for citrus, strawberries, and avocados

Vegetables except for spinach, tomatoes, and eggplant

Herbs

Rice

Quinoa

Unprocessed meat

Nut-based milk

Healthy oils, like olive and coconut

Egg yolks

In addition, there is evidence that how you cook your food can affect the histamine levels in foods. For example, frying and grilling tend to increase histamine levels, while boiling tends to maintain or decrease levels.

Summary

High histamine foods are those that have high levels of histamines. These chemicals may be naturally present, or they may occur during processing. In addition, some foods are not high in histamines, but may affect histamine levels in the body. Histamine intolerance is not a verifiable medical disorder, but some people choose to avoid high histamine foods anyway. Most others are likely better off eating a non-restricted balanced diet.

A Word From Verywell

You probably don't need to be worried about the histamine found in some foods, but if you are, talk to a healthcare provider. Your symptoms are likely caused by another trigger and should be diagnosed and treated accordingly.

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