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Now Foods Vitamin A 10,000 IU is a dietary supplement with 10,000 IU (200%RDA) of vitamin A in one softgel, which facilitates its absorbency and digestibility. For its best effect, a natural form of vitamin A was used, obtained from fish liver oil.
Vitamin A - a group name for fat-soluble retinoids (retinol, retinal and retinoic acid), the most important of which is retinol. Retinoids are a necessary dietary component for the human organism. They stimulate growth and affect epithelial cells differentiation, as well as improve the synthesis of membrane glycoproteins.
Sources of vitamin A:
The sources of vitamin A in food are mainly cod-liver oil and animal liver, which are consumed too rarely. The basic form of this vitamin in food of animal origin is retinyl palmitate, which is degraded in the small intestine into retinol – the proper form that is fully biologically active.
Consequences of vitamin A deficiency:
The distinctive feature of vitamin A is that its deficiency leads to nyctalopia (night-blindness), that is a visual impairment which consists in disturbed vision in low light.
Other symptoms of the deficiency are: epithelium keratinisation, dryness of conjunctivae and corneas, brittle nails, dry skin, loss of appetite, eyesight deterioration, growth retardation (in children), psoriasis, acne, spot baldness, feeling generally unwell.
Which form of vitamin A is the right one?
It is generally known that carrots contain a lot of vitamin A. Unfortunately, that statement is meritorically poor, or even partly incorrect. As a matter of fact, carrots do not contain vitamin A, but its precursor - provitamin A in the form of beta-Carotene, which is transformed into vitamin A not earlier than in the liver.
However, not many people know that such a transformation is not very effective and has many limitations, like:
- beta-Carotene absorbency, which is between 25-50% and is inversely proportional to its consumed amount
- the capacity of beta-Carotene transformation, i.e., from one unit, the organism will create maximum 1/6 of a vitamin A unit, and in many diseases (diabetes, hypothyroidism, removed gallbladder) the transformation is significantly inhibited
- fat availability, i.e., carotenes are transformed into vitamin A with the help of bile acids, while gall is created only when fat is consumed
Moreover, research shows that big doses of synthetic beta-Carotene in smokers cause a higher frequency of lung cancer and a higher fatality rate.
There can only be one conclusion: the right form of vitamin A is the one that occurs naturally in animal and fish oil. That is exactly the one that has been placed in the product Now Foods Vitamin A 10,000 IU.
Vitamin A prevents neoplasms:
Research has shown that the deficiency of vitamin A in the diet contributes to a greater risk of developing neoplasms arising from epithelium, whose differentiation is dependent on retinoids. A particularly visible relationship was observed between the low level of this vitamin in the blood and the increase of breast cancer risk in postmenopausal women.
Moreover, in some experiments, the administration of vitamin A decreased the activities of some carcinogens, and its antioxidant properties may be responsible for anti-tumour activity. It has also been demonstrated that the vitamin protects from lung cancer and bladder cancer in men.
Retinoic acid (one of retinoids) shows anti-tumour activity in acute myeloid leukaemia; it has been demonstrated that it inhibits the proliferation of neoplastic cells, stimulates the production of TNF-Alpha (tumour necrosis factor) and activates lymphocytes.
What else about vitamin A?
- it is necessary for proper thyroid functioning
- it speeds up the process of wound healing
- it conditions the normal functioning of eyesight
- it is beneficial for skin and mucous membranes
- it protects the organism from infections
- intensive training and physical effort use up its reserves in the organism
- there is a relationship between a high protein (low fat) diet and vitamin A deficiency and its result - eyesight damage
To sum up, Now Foods Vitamin A 10,000 IU is a dietary supplement intended for the effective supplementing of vitamin A deficiency. Used together with vitamins D and K2, it works synergistically and can prevent many diseases. It is a necessary condition for healthy bones and teeth, good eyesight, healthy hair, skin and nails. It also shows anti-tumour activity and contributes to overall health.
Vitamin A is an optimal dose. Deficiencies of this vitamin cause skin problems (hyperkeratosis of the epidermis), dried conjunctivitis, eye problems, liver disease. The product is formulated so that one capsule covers the daily requirement of vitamin A. It dissolves in fat, so I recommend taking it with the main meal containing fat. Vitamin A supplementation should be combined with vitamin D3 and K2. They work synergistically and help to keep the body in perfect condition. Very good combination is also taking vitamin A together with vitamin E. One in four men and one in three women suffer from deficiencies of these two vitamins. Deficiencies must be supplemented. You should also take care of maintaining the proper levels of these vitamins.
Now Foods is a company with years of experience in the industry that offers a wide range of nutrients and dietary supplements. Brand is known for its high-quality products designed for hair and nails and supplements supporting the immune system. The offer includes the antioxidant supplements, antibacterial supplements, reducing appetite supplements, products supporting the reduction of body fat and improving digestion. All products are made from natural ingredients.
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Softgel Capsule (bovine gelatin, glycerin, water) and Organic Extra Virgin Olive Oil. Contains fish (cod, saithe, haddock, pollock).
Vitamin A (retinol) is present in foods of animal origin (fish of the sea, fish, eels, liver, pork and beef, eggs, butter). In the plant products it is present as provitamin A (b-carotene), a powerful antioxidant. The food products containing pro-vitamin A are fruits in yellow and red, including apricots, tomatoes. Necessary in process of building and assimilation of proteins, affects the normal growth of bones and helps the treatment of eye diseases.Iinhibits the excessive action of the thyroid hormone - thyroxine, which simultaneously prevents the deposition of excess vitamin A. Necessary in the sports diet of in the form of food, such as dietary supplements and nutritional supplements.
Vitamin A deficiency causes growth inhibition, flaking and dryness of the skin, impaired night vision (i.e. Night blindness).
Excess of vitamin A leads to calcification of the bones and some soft tissues, and abnormalities in the functioning of glomerulonephritis
Dosage: Specified in IU and it is 5000 IU per day.
Retinyl palmitate - ester of vitamin A, especially valued in cosmetology. It is considered the gentlest form of this vitamin, therefore it is recommended to people with sensitive skin. It is also characterized by good assimilability in oral application, it is de-esterified without any problems in the small intestine to retinol, a fully active biological form of vitamin A.
Retinol demonstrates a wide range of activities in the human organism. Vitamin A is especially popular due to its positive influence on epithelial cells. It is responsible for proper, nourished state of skin, hair and nails. Apart from this, proper supply of retinol is also incredibly important for the health of the skeletal system, as vitamin A is a regulator of growth of bone tissue.
Vitamin A is also essential to maintain proper functions of eyesight. Its derivative, by binding with opsin, creates rhodopsin, which is responsible for stimulating the activity of rod cells located on eye retina. Thanks to this, it is possible to maintain proper vision in the conditions of poor lighting.
Some sources also suggest immunity functions of vitamin A. It may decrease the risk of pathogen permeation in the epithelium of the respiratory system.
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