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

Onions are one of the respected vegetables for any housewife. After all, it is an indispensable ingredient in many dishes. In addition, this is a product that has been tested for centuries, relieving most ailments. Probably, there is no more affordable and effective means to improve the entire body. However, it should be remembered that, despite the fact that onion has useful properties, there are also contraindications to its use.

History reference

Bulb onion is a fairly ancient vegetable plant. The first memories of its cultivation date back to the fifth millennium BC. e. An inscription about him was found on the Egyptian pyramid. Even then I was interested in people 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 campaigns. Thanks to its culinary qualities, onions quickly gained popularity and spread throughout the world.

rich composition

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

1. Vitamin RR. This component normalizes blood sugar and cholesterol. It perfectly strengthens blood vessels.
2. Vitamins of group B. Contribute to increasing stress resistance, stimulating the functioning of the brain. Normalize metabolism. Able to improve the condition of the skin, nails, hair.
3. Vitamin C. Thanks to him, onion improves immunity, protects the body from colds, viral diseases.
4. Vitamin E. Gives the vegetable antioxidant properties.
5. Vitamin H. This is one of the most effective means for strengthening nails and beauty of hair. In addition, it improves the functioning of the nervous system.
6. Cellulose. Provides the body with cleansing of toxins. Promotes the removal of excess cholesterol. Normalizes bowel function.
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 and bones. Favorably affect the work of the heart and blood vessels. Contribute to the normalization of pressure, regulation of metabolism. Protect the body from anemia. Normalize the functioning of the brain.
8. Flavonoids. These substances prevent the formation of cancer cells.

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

The energy value

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

Vegetable (100 g) contains:

• carbohydrates (8.2 g),
• vegetable proteins (1.4 g),
• fiber,
• quite a bit of fatty acids (0.2 g).

Calorie content of 100 g of the product - 41 kcal. One medium bulb contains about 30 kcal.

In addition, onions are rich in organic acids, useful essential oils. The main sources of calories are proteins and organic acids, oils have the ability to break down fats and improve digestion. It is due to the low calorie content and fat-burning beneficial properties that the vegetable contributes to weight loss.

Virus Protection

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

A vegetable is able to kill most pathogenic microbes, such as:

• tuberculosis bacillus;
• influenza virus;
• diphtheria bacillus.

Everyone knows how quickly he can clear the room of a variety of pathogenic microbes. Doctors, having studied onions, useful properties and contraindications, came to the conclusion that during epidemics, the vegetable should be rubbed and placed in a room to get rid of viruses.

ethnoscience

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

• respiratory ailments;
• nasal congestion;
• boils;
• diabetes;
• hypertension;
• toothache;
• haemorrhoids;
• whooping cough;
• otitis;
• sprain.

Beneficial features

Many people want to know more about onions (calorie content, useful properties). Harm, unfortunately, it is also able to bring the body. But more on that later. Now let's talk about the positive impact:

1. Onions are very popular in cooking. It is a desirable ingredient in almost every dish, to which it gives a unique, refined taste.
2. A large amount of iron contained in the vegetable protects the body from anemia. However, its content does not change even after heat treatment.
3. Onion stimulates appetite and helps to improve the secretion of gastric juice.
4. Potassium, which is part of the composition, has a positive effect on the work of the heart and blood vessels.
5. The vegetable helps cleanse the blood.
6. It has a calming effect, stabilizes the nervous system, improves sleep.
7. Some sources claim that eating onions is an excellent prevention of recurrent heart attacks.
8. Everyone knows about the fight against colds of this product.
9. Onion masks allow lifeless, weakened, dull hair to shine with beauty. In addition, they contribute to the improvement of their growth.
10. Vitamins, which are rich in onions, prevent beriberi and increase immunity.
11. There is no doubt about the antibacterial properties. Onions in the human body destroy various microbes.

Contraindications

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

Contraindications include:

1. Heart disease. It is not recommended to abuse the vegetable with such pathologies.
2. Diseases of the liver.
3. Hypertension. Onions can increase blood pressure.
4. Asthma. Sometimes a vegetable can provoke an attack.
5. Ulcerative diseases. Onions cause irritation of the mucous membrane.
6. Metabolism disorder. People who have such a problem should not abuse the product, as it provokes the formation of gases and mucus in the body.

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

Another disadvantage of onions is that they arise after eating them. Roasted walnut or parsley allows you to get rid of it if necessary. But such methods are effective if a small amount of a vegetable is eaten.

Cooking

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

Not only raw vegetables have medicinal properties. benefits the body. Cooked in butter, it helps to alleviate coughs and relieves most colds. In baked form, it removes excess sugar from the blood. Such an impact is confirmed by the centuries-old experience of folk healers and the scientific research of modern scientists.

For people suffering from mucosal diseases, thermally processed onions are suitable for consumption. After all, the raw product, as previously noted, causes an exacerbation of gastrointestinal ailments.

Remember that onions, when used correctly, help in the fight against many diseases and do not harm the body. Be healthy!