what are the biochemical functions of vitamin a?
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Role of vitamin A in human metabolic processes. Vitamin A (retinol) is an essential nutrient needed in small amounts by humans for the normal functioning of the visual system; growth and development; and maintenance of epithelial cellular integrity, immune function, and reproduction.
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Vitamin A (retinol) is an essential vitamin in the daily functioning of human beings that helps regulate cellular differentiation of epithelial tissue. Studies have shown that an excess of vitamin A can affect embryonic development and result in teratogenesis, or the production of birth defects in a developing embryo.
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Vitamin F is comprised of two essential omega-3 and omega-6 fats — ALA and LA. These two fats play a major role in regular bodily processes, including immune system function, blood pressure regulation, blood clotting, growth, and development.
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Also known as vitamin H, biotin is one of the B complex vitamins that help the body convert food into energy. The word “biotin” comes from the ancient Greek word “biotos,” which means “life” or “sustenance.” B vitamins, and specifically biotin, help keep your skin, hair, eyes, liver, and nervous system healthy.
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There are two types of vitamin A that are found in the diet. Preformed vitamin A is found in animal products such as meat, fish, poultry, and dairy foods. Provitamin A is found in plant-based foods such as fruits and vegetables. The most common type of pro-vitamin A is beta-carotene.
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Antioxidant (stabilization of cell membranes, regulation of oxidation reactions, protection of polyunsaturated fatty acids [PUFA] and vitamin A).
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Vitamin A has two forms: retinoids and carotenoids. Both forms are readily available in a wide range of healthy foods, and eating foods containing vitamin A is considered the best way to get it in to your system. Retinoids are also beneficial for acne and photoaging when applied topically to skin.
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['Supports healthy bones, teeth and gums.', 'Supports immune system function.', 'Protect fat-soluble Vitamins A and E and fatty acids from oxidation.', 'Has anti-oxidant properties.', 'Aids in fighting off pathogens and free radicals.']
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Vitamin A helps to speed up healing, prevent breakouts and support the skin's immune system and it promotes natural moisturising - which means it helps to hydrate the skin effectively, giving it a radiant glow. It assists in promoting and maintaining a healthy dermis and epidermis; the top two layers of your skin.
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Vitamin A is a fat-soluble vitamin that is naturally present in many foods. Vitamin A is important for normal vision, the immune system, and reproduction. Vitamin A also helps the heart, lungs, kidneys, and other organs work properly. There are two different types of vitamin A.
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['Vitamin C - important for maintaining healthy body tissues.', 'Vitamin A - important for maintenance of normal vision, skin and the immune system.', 'Folate - important for normal and healthy blood formation.', 'Fibre – helps to maintain a healthy gut.']
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Micronutrients (vitamins and minerals) have key roles in numerous homeostatic processes, enabling the body to produce enzymes, hormones and other substances that are essential for energy production, cell maintenance and repair, immune function and recovery from illness, blood formation, and maintenance of vital organs.
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Symptoms of vitamin A toxicity include dry, itchy skin, headache, nausea, and loss of appetite. Signs of severe overuse over a short period of time include dizziness, blurred vision and slowed growth. Vitamin A toxicity can also cause severe birth defects and may increase the risk for bone loss and hip fractures.
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[' covers and protects the body from injury, infection and water loss.', ' helps regulate body temperature.', ' eliminates waste.', ' gather info. about the environment.', ' produce vitamin D.']
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What Vitamin A Capsules are used for. The high doses of vitamin A in Vitamin A Capsules are used for the treatment of symptoms associated with a severe deficiency of vitamin A in the diet. These symptoms include long term infections, skin rashes, acne, skin ulcers and eye problems.
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Vitamin C, also known as ascorbic acid, is necessary for the growth, development and repair of all body tissues. It's involved in many body functions, including formation of collagen, absorption of iron, the immune system, wound healing, and the maintenance of cartilage, bones, and teeth.
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Vitamin A deficiency can result from inadequate intake, fat malabsorption, or liver disorders. Deficiency impairs immunity and hematopoiesis and causes rashes and typical ocular effects (eg, xerophthalmia, night blindness).