Onion: useful properties and contraindications. What vitamins are found in onions

Onions - this is one of the respected vegetables from any housewife. After all, it is an indispensable ingredient in many dishes. In addition, it is a product that has been proven for centuries, eliminating most ailments. Probably, there is no more affordable and effective means to make the whole organism healthier. However, it should be remembered that, despite the fact that it has onions useful properties, and there are also contraindications to its use.

Historical reference

Onion is an old vegetable plant. The first memories of his cultivation are dated to the fifth millennium BC. E. On the Egyptian pyramid was found an inscription about him. Even then, people were interested in onions (useful properties and contraindications).

It is believed that his homeland is the countries of the Mediterranean and Asia. He came to us with the Romans who brought him from the campaigns. Due to its culinary qualities, the onion quickly gained popularity and spread all over the world.

Rich composition

What is the reason for such glory? After all, to this day, the onion is of interest: features, chemical composition, properties - everything worries consumers. An amazing vegetable allows you to maintain your health all year round. After all, it is distinguished by the presence in the composition of an extensive list of useful substances:

1. Vitamin PP. Such a component normalizes blood sugar and cholesterol. It perfectly strengthens the vessels.
2. Vitamins of group B. They contribute to the increase of stress resistance, stimulation of the functioning of the brain. Normalize the metabolism. Are able to improve the condition of the skin, nails, hair.
3. Vitamin C. Thanks to it, the onion increases immunity, protects the body against colds, viral diseases.
4. Vitamin E. Gives the vegetable antioxidant properties.
5. Vitamin N. This is one of the effective means for strengthening the nails and beauty of hair. In addition, it improves the functioning of the nervous system.
6. Cellulose. Provides the body with cleansing from toxins. Promotes the removal of excess cholesterol. Normalizes the work of the intestines.
7. Micro-, macro elements. Calcium, sulfur, chlorine, phosphorus, copper, iodine, zinc, fluorine, potassium, sodium, chromium, magnesium, iron, manganese and many others. They help strengthen tooth enamel, bones. Favorably affect the work of the heart and blood vessels. Promotes normalization of pressure, regulation of metabolism. Protect the body from anemia. Normalize the functioning of the endocrine system, the brain.
8. Flavonoids. These substances prevent the appearance of cancer cells.

Speaking about onions, useful properties and contraindications, it should be noted that the vegetable is rich in carotene, nicotine, citric and malic acids.

Energy value

Not many people know that it allows you to reduce the weight of onions. Useful properties, composition, calorie content will be considered further.

The vegetable (100 g) contains:

• Carbohydrates (8.2 g),
• Vegetable proteins (1.4 g),
• Cellulose,
• Very few fatty acids (0.2 g).

Caloric content of 100 g of product is 41 kcal. One medium bulb contains about 30 calories.

In addition, rich in onion organic acids, useful essential oils. The main sources of calories are proteins and complex carbohydrates. Organic acids, oils carry the ability to break down fats, improve digestion. It is thanks to low calorie and fat-burning beneficial properties that the vegetable helps to reduce weight.

Protection against viruses

Volatile substances - essential oils and glycosides - determine the therapeutic effect that the onions have. Useful properties and contraindications, discussed below, should be known to everyone.

Vegetable is able to kill most pathogenic microbes, such as:

• Tubercle bacillus;
• Influenza virus;
• Diphtheria bacillus.

Everyone knows how quickly he can clean the room of various pathogenic microbes. Doctors, having studied onions, useful properties and contraindications, came to the conclusion that during epidemics, one should grind the vegetable and place it in the room to get rid of the viruses.

ethnoscience

Not only in cooking is in demand onions. The use and contraindications to the use of vegetables since ancient times have been of interest to mankind. Not surprisingly, onion is widely used in traditional medicine recipes. It allows you to effectively treat:

• Ailments of the respiratory tract;
• nasal congestion;
• Furuncles;
• diabetes;
• Hypertension;
• Toothache;
• hemorrhoids;
• whooping cough;
• otitis;
• sprain.

Beneficial features

Many people want to know more about onions (calorie, useful properties). Harm, unfortunately, it is also able to bring the body. But more about this later. Now let's touch on the beneficial effects:

1. Onion is very in demand in cooking. He is a desirable ingredient of almost every dish, which is given a unique, exquisite taste.
2. A large amount of iron, contained in a vegetable, protects the body from anemia. However, its content does not change even after heat treatment.
3. Onion causes appetite and helps to improve the secretion of gastric juice.
4. Potassium, part of the composition, positively affects the work of the heart, blood vessels.
5. Vegetable helps purify the blood.
6. It has a calming effect, stabilizes the nervous system, improves sleep.
7. Some sources say that using onions is an excellent prevention of repeated heart attacks.
8. The fight against colds of this product is known to everyone.
9. Masks from the bow allow to shine with the beauty of lifeless, weakened, dull hair. In addition, they contribute to the improvement of their growth.
10. Vitamins, which are rich in onions, prevent beriberi and improve immunity.
11. Antibacterial properties are not in doubt. Onion in the human body destroys various microbes.

Contraindications

Not all people can use onions. Useful properties and contraindications are not comparable. Of course, this is a very valuable vegetable, but each person has his own characteristics.

Contraindications include:

1. Diseases of the heart. It is not recommended to abuse the vegetable in such pathologies.
2. Liver disease.
3. Hypertension. Onions can raise blood pressure.
4. Asthma. Sometimes a vegetable can provoke an attack.
5. Ulcerous diseases. Onions cause irritation of the mucous membrane.
6. Metabolic disorders. People who have such a problem should not abuse the product, because it provokes the formation of gases, mucus in the body.

The above cautions apply to raw onions. In fried, boiled, stewed, the vegetable is completely harmless.

Another drawback of onions is the unpleasant odor that arises after using it. To get rid of it if necessary allows fried walnuts or parsley. But such methods are effective if a small amount of a vegetable is eaten.

Preparation

As you know, the product is used not only in raw form. How does the thermally processed onion affect the body ? Benefits and contraindications are the same or not?

Healing properties are not only a raw vegetable. Fried onions bring the body benefits. Cooked in butter, it helps to cough and relieves most colds. In the liver form removes from the blood of excess sugar. Such influence is confirmed by centuries-old experience of folk medicine men and scientific researches of modern scientists.

People suffering from diseases of the mucosa, for consumption is suitable for heat-treated onions. After all, the raw product, as previously noted, causes an exacerbation of gastrointestinal ailments.

Remember that onions with proper use help in the fight against many diseases and harm the body does not bring. Be healthy!