Symptoms of deficiency

Vitamin A - fat soluble vitamin necessary for normal body function. Vitamin A deficiency occurs for the following reasons: improper construction of the diet, which sharply limited animal and vegetable foods rich in this substance; liver disease, biliary tract, pancreas Diabetes and pancreas - the things you need to know   and intestines; chronic alcoholism, inadequate intake of vitamin E (vitamin E (antioxidant) prevents oxidation of vitamin A).

Vitamin A deficiency manifests itself as follows:

Eyes

A clear sign of a lack of vitamin A are visual disturbances ranging from diseases of the mucous membrane of the cornea and the eye (due to atrophy of the lacrimal glands, keep the humidity of the eye) to xerophthalmia - the disease deprives a person of .  Dryness promotes corneal eye diseases and infections that ultimately lead to necrosis (necrosis) of the cornea .  In the retina, there are light-sensitive material, providing visual function, visual purple (or rhodopsin) and iodopsin .  The composition of visual purple comes just vitamin A, and is provided so that the eyes to the dark adaptation .  But if not enough of vitamin A in the body, the adaptation of the eyes to the darkness occurs .  Hence, there is a disease, called "night blindness" .  It is in the retina accumulates the most vitamin A, so the lack of foods rich in vitamin A, very quickly affect the human vision .

Hair

Vitamin A is essential for healthy hair. Deficiency of vitamin A, which is often referred to as "vitamin beauty" leads to dryness of the scalp and, as a consequence, hair loss Hair loss - the distress signal   and thinning their structure. Vitamin A helps to keep moisture in the hair by regulating the level of sebum. Furthermore, vitamin A is essential for the growth and regeneration of hair.

Teeth

Tooth decay and gum disease Gum disease - whether the body to cope without the help of a doctor?   It is generally considered not serious disease, but today it has reached epidemic proportions, affecting people of all ages, from young to old. It turns out that diseases of the teeth and oral vitamin A deficiency is to blame: it is needed to produce keratin and save enamel.

Skin

One of the first signs of a lack of vitamin A - skin dryness. Any skin structure suggests that diet is an urgent need to introduce foods rich in vitamin A. The skin structure - this atrophy of sweat glands, and dryness of mucous membranes covering the bodies of the respiratory system: oral cavity, nostrils, sinuses, trachea, bronchi, i.e. diseases associated with disorders of the respiratory tract, - all this depends on the amount of vitamin A in the body. Even psoriasis Psoriasis - immune system alarm According to many vitaminology, in some cases, can be treated by increasing the dose of vitamin A.

Nails

Vitamin A deficiency also adversely affect the condition of nails, because this vitamin provides the body with nutrients and protein. Violation of protein metabolism leads to the formation of brittle nails and hangnails.

If you drop the vision, slows down hair growth, mucous membranes prone to various diseases, lowered immunity, if you are often exposed to colds or infections, all of this suggests a lack of vitamin A. It is proved that the best health have those people who, Firstly, there is little to eat, and secondly, consume plenty of fruits and vegetables rich in carotene.

The role of vitamin A in the prevention and treatment of certain diseases

Vitamin A - fat soluble vitamin. Our body gets vitamin A from animal products and vegetable origin. Actually vitamin A called retinol, but in the body of animals and humans, vitamin A is derived from carotene - the so-called pro-vitamin A. The name "carotene" vitamin A obtained from carrots "karotel."

Vitamin A is essential for normal growth and development of cells and tissues. Do not forget that the atrophy of the lacrimal gland and corneal changes of the mucous membranes and bronchial disorders in infants, disorders of brain function and thyroid The thyroid gland - is responsible for your hormones   and even pain in the bones - all this is not that other, as signs of vitamin A deficiency

Vitamin A and viscera

Development of bone also strongly dependent on the amount of vitamin A in the body. When it is lacking, broken bone structures (teeth, spine). This often leads to the infringement of the nerve endings in the spinal column and the subsequent internal diseases.

Vitamin A deficiency in the body may cause cirrhosis of the liver, especially in alcoholism. Vitamin A supports normal tissues and has anti-infective properties. In severe infections more easily recover those patients who get in their diet foods with high doses of vitamin A. This is why doctors recommend that mothers within a few weeks after the birth to give him a carrot juice - the richest source of vitamin A, since the tender age grudnichkovom starts bone deformities, and the possible impairment of the nerves that can later lead to serious consequences.

About the lack of vitamin A in the body can speak and pain in the eyes of the world, burning under the eyelids, night blindness Night blindness from vitamin A deficiency   (blurred vision in low light, such as at dusk or dark), "goose bumps" on his elbows and hips. In children, the delay in growth and development can also be a symptom of a lack of vitamin A.

Vitamin A is opposed to cancer

It is important that vitamin A is attributed to the ability to increase resistance to cancer. At first glance, it seems incredible, but this fact has been proved experimentally. It is especially important to know this to smokers because of vitamin A deficiency in the risk of cancer of the larynx Laryngeal cancer: at the first sign - to the doctor!   increased many times over. Even 200 years ago it was known that lip cancer associated with pipe smoking. And the risk of lung cancer Lung cancer - prevention is better than cure   for smokers is 25 times greater than for non-smokers.

Thyroid controls the activity of certain types of cells - T lymphocytes (besides them, blood cells are A and B), it is disposed of and the immune system. Proper functioning of this gland determines the content of the body enough vitamin A and magnesium levels. When there is not enough vitamin A and magnesium, thyroid loses its protective properties that may lead to leukemia.

Many scientists and clinicians believe that a sufficient number of foods rich in vitamin A in our diet helps to prevent not only cancer, but also cardiovascular and heart disease: hypertension, thrombophlebitis, ulcers, skin and intestines, as well as other diseases, since vitamin A refers to 'skin' vitamins. It was found that the reception at the beginning of an attack of hay fever 150 mg of vitamin A may prevent an attack.

In the treatment of vitamin A hypervitaminosis should be avoided; with caution to use this substance in cholelithiasis, chronic pancreatitis (may increase), kidney and cardiac decompensation; Pregnancy can only be up to 5,000 international units of vitamin A.