Are Green Beans High in Histamine?

Are green beans high in histamine? If you enjoy fresh green beans, you might wonder whether they can aggravate histamine intolerance symptoms. The good new is that green beans are considered to be a low histamine food but there are concerns that green beans can still trigger histamine intolerance symptoms in some people.

Green beans are a familiar vegetable on the plates of many. Green beans are known by many common names, including French beans, string beans, snap beans, snaps, and the French name haricots verts. You can buy them fresh, canned, frozen, or even grow your own.

Plus, you can cook green beans in various ways to bring out their flavor and they’re quick and easy to prepare.  Some people steam, boil, or bake greens beans.

You can even add them to low-histamine casseroles or salads or toss them into a stir-fry. But there’s another question: should you eat green beans if you have histamine intolerance?

Are Green Beans High in Histamine?

Before buying green beans, you must first know whether they’re high in histamine. If you have histamine intolerance, too much histamine, a type of biogenic amine, can trigger histamine intolerance symptoms. (3)

The key is to preventing histamine intolerance symptoms is to choose low-histamine foods and keep your total body histamine burden as low as possible.

So, what about green beans? Should you eat them if you have histamine intolerance? They do not contain lots of preformed histamine, but they can still be problematic if you have histamine intolerance. That’s because green beans are histamine liberators.

Green Beans as Histamine Liberators

With histamine intolerance, it’s also important to avoid histamine liberators, foods and medications that trigger the release of histamine by mast cells and basophils, two types of white blood cells in your bloodstream.

Some examples of foods that are histamine liberators are citrus fruit, shellfish, fish, peanuts, strawberries, tomatoes, alcohol, and egg whites. (not a complete list)

How do you know if a food is a histamine liberator? One test used in a healthcare setting is called leukocyte histamine release test (LHRT).

To do this test, researchers add extracts of foods or other compounds with possible allergic properties to a person’s leukocytes (white blood cells) from their bloodstream.

If they’re sensitive to that compund or food, their leukocytes will release histamine. The more sensitive an individual is to that food, the more histamine they release.

Based on this type of testing, green beans can be histamine liberators. Green bean allergies are also fairly common and there are cases of people who are hypersensitive to green beans developing an allergic reaction from inhaling the aroma of cooking green beans. (2)

Also, find out whether black beans contain histamine or other biogenic amines.

histamine intolerance symptoms can mimic an allergic reaction

An allergic reaction to green beans might trigger symptoms such as:

  • Hives
  • Diffuse itching
  • Swelling of the lips, face, tongue, or throat
  • Difficulty breathing
  • Lightheadedness, dizziness
  • Nausea or abdominal cramping

If you have histamine intolerance and you eat greens beans, you could experience these symptoms too, although the symptoms will likely be milder than they would be with an allergic reaction. How well you tolerate histamine liberators, like green beans, will depend on:

  • Your level of diamine oxidase (the enzyme that breaks down histamine)
  • The totality of your diet If you eat mostly low histamine foods and eat a few green beans, you may have symptoms

From talking to clients with histamine intolerance, many can tolerate modest quantities of green beans. However, a few cannot. I usually encourage people with histamine intolerance to introduce small quantities of fresh green beans to their diet and see how they respond.

Be sure to ocument everything you eat and your symptoms in a food diary. We can’t emphasize that enough! You must know how your body responds when you add something new to your diet.

Canned Greens Beans May Contain More Histamine Than Fresh

Beyond being a histamine liberator, green beans that are canned may contain additional histamine. Canned foods often have higher levels of histamine than fresh produce. (4,7) So, if you find you can tolerate small quantities of green beans, make sure they’re fresh and not canned. Avoid canned foods entirely.When you store canned foods for long periods of time, especially in a warm environment, can boost their histamine content.

Preparing and Cooking Green Beans

How can you prepare green beans to limit their histamine content?

First, start with the best beans you can find. Gently wash them under cool water, fanning out the stems to remove any dirt or debris nestled inside. Toss any that are brown, slimy or rusty – we only want the freshest, crunchiest ones going into our pot.

Next comes the fun part – cooking them to crispy, flavorful perfection. Avoid boiling them to mush, but you also need to cook them long enough to lower their histamine levels. The secret is getting the temperature just right.

Start by heating up a skillet with a little olive. Toss in the green beans with a sprinkle of sea salt. Listen to them sizzle and pop as they transform from raw to lightly charred. Keep stirring and flipping them so each side gets a turn kissing the heat.

After 5-7 minutes, taste a bean. You want it to be just tender but still have that satisfying crunch. A few more minutes and the histamines will break down further. But don’t overdo it or you’ll lose all the precious nutrients.

Take the beans off the heat while they’re still vibrant green.

Nutritional Content of Green Beans

As mentioned, green beans are low in histamine but are histamine liberators, but some people can eat them in modest quantities without triggering histamine intolerance symptoms.

If you enjoy green beans and they don’t worsen your symptoms, eat them occasionally, but realize they aren’t as nutritious as other green vegetables.

Green beans are low in carbohydrates, making them blood-sugar friendly, and high in fiber. They also contain significant quantities of potassium and iron.

The fiber in green beans is both soluble and insoluble, making it the fiber beneficial for both heart (soluble fiber) health and for preventing constipation. (insoluble fiber).

raw green beans contain lectins

Don’t Eat Green Beans Raw

If you eat small quantities of green beans, don’t eat them raw. Raw green beans contain lectins, proteins that are hard to digest and are potentially damaging to the cells that line your gut.

Lectins may also reduce nutrient absorption. If you eat a lot of raw green beans, you could develop nausea and diarrhea. (7)

The Bottom Line

Are green beans high in histamine? In and of themselves, they’re not high in histamine, although canned ones may contain more. However, they are histamine liberators, meaning they can still pose problems for you if you have histamine intolerance.

As mentioned, some people can consume modest quantities, so it’s important to determine your individual tolerance. So, listen to your body and keep a food journal. That’s always a good practice! Now find out whether zucchini is low in histamine, the histamine content of peas, and whether arugula is a low-histamine vegetable.


  1. “LOINC 7128-2 — Green Bean triggered histamine release ….”
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  3. Shulpekova YO, Nechaev VM, Popova IR, et al. Food Intolerance: The Role of Histamine. Nutrients. 2021;13(9):3207. doi:10.3390/nu13093207
  4. ‌ Ganapathy Balavinayagamani, Khalid A, Mong Xin Ru, Paulraj Ponnaiah. Histamine content in various types of canned foods (fruits and syrups) stored under different temperature… ResearchGate. Published August 2017. Accessed March 28, 2022.
  5. ‌”Green beans, raw nutrition facts and analysis..”
  6. He S, Simpson BK, Sun H, Ngadi MO, Ma Y, Huang T. Phaseolus vulgaris lectins: A systematic review of characteristics and health implications. Crit Rev Food Sci Nutr. 2018 Jan 2;58(1):70-83. doi: 10.1080/10408398.2015.1096234. Epub 2017 Jul 11. PMID: 26479307.
  7. Altafini A, Roncada P, Guerrini A, Sonfack GM, Accurso D, Caprai E. Development of Histamine in Fresh and Canned Tuna Steaks Stored under Different Experimental Temperature Conditions. Foods. 2022 Dec 14;11(24):4034. doi: 10.3390/foods11244034. PMID: 36553776; PMCID: PMC9778485.

Hi! I'm Dr. Kristie Leong M.D. M.S. I graduated from Virginia Commonwealth University and have a deep interest and passion for histamine intolerance. My journey includes a comprehensive Kindle ebook on Histamine Intolerance and its dietary management.With a Masters in Clinical Pathology, my knowledge of immunology adds a robust scientific foundation to my expertise. I wholeheartedly believe in the power of lifestyle and prevention in healthcare. Let's work together to manage histamine intolerance through practical dietary and lifestyle choices. :-)