Onions have been known to mankind since ancient times. For more than 5000 years, people have been using this vegetable, unique in its qualities. But wild forms of onions have not yet been discovered. This allows us to conclude that the onion is a cultivated plant that is obtained by selection. The homeland of onions is Central Asia and Afghanistan.
How many calories are in onions? This question worries many people, especially those who follow their diet or want to lose extra pounds.
I would like to say right away that today there are a lot of onion varieties, but perhaps the most common is onion. The calorie content of onions is 41 kcal per hundred grams of product. As you can see, the calorie content of onions is low, so you can safely include it in the diet for any diet. However, there is a type of onion that contains even fewer calories - green onions. The calorie content of onions in this case is twice as high as the calorie content of green onions. Also, one cannot fail to say about the calorie content of fried onions, which is perhaps the highest. But first things first.
Even in ancient times, miraculous properties were attributed to onions. Before the battle, the soldiers hung him on the chest, thereby protecting from wounds. It should be noted that there is still a rational grain here. The fact is that the calorie content in onions includes volatile substances - phytoncides, which have an antimicrobial effect, so the onions did not help protect against wounds, but rather from infection. The wound healing effect of onions has been tested for more than one decade.
Onions appeared in Russia in the 12th century. Since then, it has been actively used for medicinal and nutritional purposes. The calorie content of onions, as well as its beneficial properties, have been studied well, but they do not cease to amaze with their variety and proven effectiveness.
The benefits of onions
In addition to the question of how many calories are in onions, many are also interested in what vitamins onions contain, and how they are generally useful.
Onions contain a large amount of iron, and this indicator does not change, in whatever form the onion is used. The calories in onions also include potassium, which has a beneficial effect on the cardiovascular system. It is also believed that onions are great for cleansing the blood.
In addition to the low calorie content of onions, it has a calming effect, improves sleep and normalizes the nervous system. From some sources it became known that onions serve as a prophylactic agent against recurrent heart attacks.
Also, onions are useful in the fight against colds. In order to fight a runny nose, tampons dipped in onion juice are used, and inhalations using onion juice are also useful.
There is no doubt about the positive effect of bows on human hair. Onion masks help get rid of lifeless, dull and weak hair.
Onion harm
Despite the low calorie content of onions, it still has several contraindications. The fact is that onions can increase acidity in the stomach and irritate the digestive organs. With such problems, onions are contraindicated. In addition, it negatively affects heart rhythms, so if consumed in large quantities, it can provoke high blood pressure and an asthma attack.
The calorie content in green onions is perhaps the lowest - 20 kcal per hundred grams of product. Also, the calorie content of green onions includes proteins, fats and carbohydrates in minimal quantities. Therefore, those people who are on a diet, having learned how many calories are in green onions, can include it in their diet.
In addition to the low calorie content of green onions, they are very useful for the human body. Its useful properties are no less useful and the useful properties of onions are diverse.
Green onions are better known for their prophylactic properties in the fight against colds. It boosts immunity and strengthens the human body. Green onions help to cope with stressful situations and restore lost pep.
Green onions contain a lot of zinc, which has a beneficial effect on reproductive functions. It also includes vitamin C and calcium, strengthens the cardiovascular system, and maintains blood pressure within normal limits.
If you eat this product in moderation, then it helps to improve digestion and cleanses the body of harmful substances. Green onions are added to various dishes, as they increase the appetite and provoke the secretion of gastric juice.
As noted above, the calorie content of onions is low, only 20 kcal per hundred grams of product, so it not only gives the taste to dishes familiar to everyone, but also cannot harm the figure.
It is preferable to use fresh green onions, as an addition to vitamin salads, since heat treatment will leave less nutrients contained in onions. In addition, green onions are antiseptic and kill many known disease-causing bacteria.
Calorie content of fried onions
I would like to note right away that the calorie content of fried onions is quite high - 251 kcal per hundred grams of product. What determines the calorie content of onions in this form? It all depends on what kind of oil the onion is fried in. For example, if the onion is fried in vegetable oil, then the calorie content in the fried onion will be higher, and if in olive oil, then in this case, the calorie content in the onion will be lower.
Perhaps for some, fried onions represent a rare filth with an unpleasant pungent odor, and some cannot imagine breakfast, lunch or dinner without it. Everyone has different tastes. Meanwhile, the Jewish nation is considered the main connoisseur and lover of fried onions, whose representatives know a lot about onions and know how to cook them as a seasoning for main dishes.
It would seem that there is nothing easier than frying onions. But this business has its own secrets and subtleties. Real fried onions are made from chopped and dried onions, which are fried with oil and, after special processing, turns into a spice.
The calorie content of onions in this case is high, but nevertheless, it is used in this form in various fields of industry - in the production of pates, semi-finished products and sausages.
Fried onions are especially popular in baked goods such as onion bread and buns. Fried onions are found on the market in a ground or crushed state and in the form of flakes with a golden hue. 4.5714285714286
4.57 out of 5 (7 Votes)Onions are a very common product in all countries of the world. It is he who makes the taste of any dish more refined and unique. It is worth understanding all the pros and cons of using such a form of this product as frying.
Important! It is onions that have the highest calorie content, but at the same time they do not contribute to the appearance of excess weight. It is part of many weight loss diets.
The chemical composition and calorie content of onions
Onions, due to their fullness of nutrients and vitamins, are considered a very useful product with a unique chemical composition. It is this very composition that makes it one of the most powerful and effective methods of combating infectious diseases, diseases of the gastrointestinal tract, as well as their prevention. But this vegetable can have not only beneficial properties, but also harm health if a person has contraindications to its use or does not know the measures when eating. The most common of all types of onions is considered to be onion. It contains such useful substances that significantly strengthen the immune system, providing the body with protection in the fight against viruses. The onion root vegetable, like any other, has certain contraindications for use. These include its negative effect on heart rhythms. This can lead to asthma attacks. It is important to know well the chemical composition (BJU, vitamins and minerals) and the calorie content of this vegetable in order to regulate its use according to the characteristics of your body.
How many calories are in fried onions
Onions can be used in different forms - both boiled and fried. The most popular among consumers is the fried product. 100 g of vegetables - 251 kcal, which significantly exceeds the calorie content of the raw product. It increases 5 times. Fried onions are prepared by frying chopped onions with oil until golden brown. This makes it a popular spice, even added to baked goods. In many ways, the calorie content of this dish depends on the type of oil in which it is cooked.
Did you know? Refined and unrefined oils have the same calorific value and chemical composition. They differ only in taste and visual qualities.
Basically it is fried in vegetable oil. Creamy is used very rarely, as it does not provide enough fat, and also completely changes the taste. Sunflower oil is very high in calories. Its energy value is 8.27 kcal per 1 ml of oil. For normal frying 100 g of onions, at least 25 g of oil is required. It is recommended to use refined sunflower oil.
- It has its own list of useful properties:
- increased transparency;
- pleasant aroma;
- lack of foam when frying;
- lack of a bitter taste.
The calorie content of fried onions cooked in sunflower oil is 251 kcal per 100 g of product. That is, the usual calorie content of this root vegetable is determined in this way because this method of cooking is the most common. Despite all the stereotypes that olive oil is dietary, it is sometimes slightly higher in calories than sunflower when it comes to frying something (this does not apply to salads). Its energy value is 8.89 kcal per 1 ml of oil. Did you know? Fried onions are specially included in the menu of hospitals and sanatoriums to help remove toxins from the body.
The calorie content of onions cooked in olive oil is 256 kcal per 100 g of product. In addition, when frying, olive oil leaves a bitter taste, which spoils the whole effect of the dish. The type of oil is practically irrelevant. Fried onions are high in calories anyway. To reduce it, it must be cut and dried before cooking. You can also safely add a little water to the oil.
The benefits and harms of fried onions for the human body
You should also deal with the positive and negative effects of fried onions on the human body. 
Benefit
- If we talk about the benefits of this plant, then the following positive properties can be distinguished:
- Increases the level of iron in the blood.
- It has a good effect on the cardiovascular system.
- Cleans blood from all kinds of impurities.
- It has a beneficial effect on the functioning of the nervous system.
- Has a positive effect on the condition of the hair (onion masks).
If we talk about the benefits of a fried product, then first of all it is necessary to highlight the fact that almost all the vitamins and minerals that were present in it fresh are preserved in it. They do not evaporate anywhere, this is a myth. Fried onions have no irritating effect on the mucous membrane of the stomach and intestines. It also retains most of the ability of a raw vegetable. These include: speeding up metabolism, reducing blood cholesterol levels, speeding up the digestion of food and improving appetite.
Important! Fried onions should not be consumed by asthmatics, as its pungent smell can provoke an attack.
The product has a diuretic effect, so it is useful for those people who suffer from kidney diseases. It also promotes the production of insulin, so it is very useful for diabetics. The fried vegetable is very useful for pregnant women. It helps not only the mother's body to protect itself from infections, but also the developing body of the child.
Harm
The harm primarily lies in the high calorie content, which contributes not only to the appearance of excess weight, but also to the development of various diseases. With extreme caution, this dish should be taken by people who have a diseased liver. Fats put a heavy load on the diseased organ, so complications arise. A vegetable prepared in this way can cause certain reactions in allergy sufferers. 
They can manifest as itching, rash, skin redness, and even fever. In rare cases, side effects such as disorders of the nervous system are possible, which also has an extremely detrimental effect on the human body. It can be used for medicinal purposes, but without first consulting a doctor, it will only bring harm.
Norms for the use of fried onions
It is very important to clearly know the limits of the use of the product, so as not to cause irreparable harm to your health. Eating a thermally processed vegetable 2-3 times a week is considered the norm for the average person. Serving sizes, as well as the frequency of use, can be adjusted depending on the individual characteristics of the body. More than 200 g of onions per day can be harmful to the body.
In addition to the already mentioned negative properties of the dish, its use in large quantities can cause such unpleasant sensations as belching and bloating. Also, bad breath cannot be ruled out. With all these disadvantages, fried onions have clearly more advantages. It is enough just to know when to stop, and then it will only benefit the body.
Since childhood, we have all heard such sayings as "onions are from seven ailments", "onions are a friend to health." He is really capable of maintaining the health of the body. It contains substances such as phytoncides, which are detrimental to putrefactive and pathogenic bacteria. Onions practically do not contain fats and proteins, but they contain a lot of potassium, phosphorus, and calcium salts. About 0.8% of this vegetable is iron, up to 2.5% of nitrogenous substances. Of the vitamins, onions are rich in vitamins PP, B, A and C. Onions help to reduce blood cholesterol levels; one piece of it is enough to kill all germs in the oral cavity; the phytoncides contained in it are able to destroy the diphtheria bacillus and Koch's tubercle bacillus. The calorie content of onions varies depending on the form in which it is used.
Calorie content of fresh onions
Currently, there are a huge variety of onion varieties. They differ in shape, color and, of course, taste. The maximum calorie content will be for onions, which have the most pungent taste, and will be 40-43 kcal. In sweet onions, it will range from 32 to 39 kcal.
Calorie content of leeks
Leeks, which contain potassium salts, have a diuretic effect on the body. It increases appetite, improves the functioning of the gallbladder and liver. It is recommended to use it in case of metabolic disorders, atherosclerosis, rheumatism, kidney stones. The calorie content of onions per 100 grams is 33 kcal.
Calorie content of baked onions
When baked, onions have the lowest calorie content, it barely reaches 36 kcal per 100 grams of product. This is due to the significant reduction in carbohydrates, so it is best for dieters to consume onions in this form. Besides, 
baked onions help lower blood sugar levels.
Calorie content of boiled onions and fried
When frying, the onion changes its taste, loses its sharpness, but absorbs a large amount of fat, as a result of which it is approximately 5 times the calorie content of fresh onion. To fry 100 grams of onions, you need about 25 grams of fat. Depending on what kind of fat or oil is used for frying, the calorie content of 100 grams of fried onions will be 215-250 kcal.
On the contrary, when cooking, the calorie content of onions decreases. It has less calories than fresh onions - about 36-37.
Fried onions in vegetable oilrich in vitamins and minerals such as: vitamin C - 15.9%, vitamin E - 72.8%, cobalt - 71.5%, manganese - 16.4%, copper - 12.9%
What are the benefits of fried onions in vegetable oil
- Vitamin C participates in redox reactions, the functioning of the immune system, promotes the absorption of iron. Deficiency leads to loose and bleeding gums, nosebleeds due to increased permeability and fragility of the blood capillaries.
- Vitamin E possesses antioxidant properties, is necessary for the functioning of the gonads, heart muscle, is a universal stabilizer of cell membranes. With a deficiency of vitamin E, hemolysis of erythrocytes and neurological disorders are observed.
- Cobalt is part of vitamin B12. Activates enzymes of fatty acid metabolism and folic acid metabolism.
- Manganese participates in the formation of bone and connective tissue, is part of the enzymes involved in the metabolism of amino acids, carbohydrates, catecholamines; essential for the synthesis of cholesterol and nucleotides. Insufficient consumption is accompanied by a slowdown in growth, disorders in the reproductive system, increased fragility of bone tissue, disorders of carbohydrate and lipid metabolism.
- Copper is a part of enzymes with redox activity and involved in iron metabolism, stimulates the absorption of proteins and carbohydrates. Participates in the processes of providing the tissues of the human body with oxygen. The deficiency is manifested by disorders in the formation of the cardiovascular system and skeleton, the development of connective tissue dysplasia.
A complete guide to the most useful products you can see in the appendix
