Onions and histamine: Tolerance and possible effects
In this article, we take a "histamine look" at onions. They come in large or small, red or white, and they enhance almost any dish. But are onions suitable for a low-histamine diet , or are they considered a high-histamine vegetable? You can find the answer to that in the following blog article.
Onion Basics: What you should know about this versatile vegetable
The onion is a biennial vegetable plant, but it is most often cultivated as an annual. It consists of many concentric layers of light-colored, succulent leaves, each encased in several very thin membranes. As the onion dries, it changes color , depending on the variety: white, purple, yellow, brown, or red. Furthermore, the climate and the specific variety of onion determine whether it is more pungent or mild . Its original habitat is in Central Asia, India, Pakistan, and the Mediterranean region. Onions are seasonally available from July to October ; for the rest of the year, they are available as stored produce in almost every standard supermarket.
A variety of flavors: The different types of onions
As mentioned at the beginning, there are many different types of onions, in various sizes and colors. However, the following are among the most well-known varieties:
- White onions – They are the ideal summer onions and, due to their sweet and mild taste, are perfect for Mediterranean salads.
- Red onions – Because of their appearance, they are particularly popular in salads. However, they can also be used for cooking, frying, or baking without any problems.
- shallots – They have an elongated, pear-like shape and are among the mildest and finest onions of the various varieties.
- Onions They grow up to 20cm thick and have a rather mild flavor. They are excellent for salads, braising, grilling, and baking.
- spring onions They are also called spring onions, they are usually offered in bunches and are harvested when the bulbs are still green and very small.

Histamine in onions: Tolerance and recommendations
Many types of onions are histamine liberators and thus promote the body's own release of histamine. Red onions, in particular, are known for this. Onions are often very poorly tolerated in a low-histamine diet . White onions are the best tolerated ; according to the SIGHI list, they are classified as 0. Compared to the more common yellow onions, these Not a yellowish-brown skin, but a snow-white one. Other onion varieties such as shallots or spring onions are classified as level 1 according to the SIGHI list ; with these, individual tolerance should be tested.
Onions in a low-histamine diet: Guidelines and tips
Tolerance of onions in different diets:
Light onions are suitable for the following diets suitable:
- low-histamine diet
- gluten-free diet
- lactose-free diet
- low-nickel diet
- low-fructose diet
- low-salicylate diet
- low-sorbitol diet
Onions in a low-histamine lifestyle: Shopping and storage tips
When buying onions, it is important to make sure that they are firm and dry. Feel it. If it has a black sheen between the outer layers, it is a moldy onion.
Onions are best stored in a basket to allow them to breathe. Due to the high humidity, it's advisable not to store them in the refrigerator , as they will quickly begin to mold there.
Low-histamine cuisine: Simple and delicious recipes with onions
Finally, we have a few delicious and low-histamine recipes for you, for which you can ideally use onions.

Potato dumplings with chard
The recipe is: Low histamine, lactose-free, vegan
You will need the following ingredients:
- floury potatoes
- Spelt flour
- Salt
- Olive oil
- Swiss chard
- Onion (1)
- Garlic (1)
- HistaFood Organic Vegetable Broth
Zucchini and ricotta rolls
The recipe is: low-histamine, gluten-free, vegetarian
You will need the following ingredients:
- zucchini
- HistaFood Organic Vegetable Sauce
- Onion (1)
- Garlic (1)
- oregano
- Ricotta
- Mozzarella
- Salt
- basil
- Olive oil
Cucumber and carrot salad
The recipe is: low-histamine, gluten-free, lactose-free, vegan
You will need the following ingredients:
- Cucumber
- Carrots
- Onion (1)
- Sesame (1)
- Parsley
- HistaFood Organic Asian Sauce
- olive oil
- Salt
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Sources
- https://eatsmarter.de/lexikon/warenkunde/gemuese/zwiebeln#google_vignette
- The Great Encyclopedia of Food, Südwest Verlag GmbH 1998
