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Vitamin A and Liquid Vitamins
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Retinol can be converted by the body to retinoic acid, the form of this nutrient known to affect gene transcription. Beta-carotene and other carotenoids can be converted by the body into retinol and are referred to as pro-vitamin A. The major functions of this nutrient in the human body are as follows: "Vision"--the retina is located in the back of the eye. When light passes through the lens, it is sensed by the retina and converted to a nerve impulse for interpretation by the brain. Retinol is transmitted to the retina via the circulation and accumulates in retinal pigment epithelial cells. Inadequate retinol available to the retina results in impaired dark adaptation known as "night vision". This nutrient has been shown to have large impacts on the major functions of the vision process. "Immunity"—this nutrient is also commonly known as the anti-infection vitamin, because it is required for the normal functioning of the immune process. The skin and the mucosal cells (the cells in the airways, the digestive tract, and the urinary tract) function as a barrier and form the body's first line of defense against infections. Retinol and its metabolites are required to maintain the integrity and function of those cells. Vitamin A and retinoic acid (RA) play a central role in the development and the differentiation of white blood cells. Excess and deficiency are known to cause "birth defects". Retinol and retinoic acid (RA) are essential in embryonic development. Red blood cells, like all blood cells, are derived from precursor cells called 'stem cells". Stem cells are dependent on retinoids for the normal differentiation into red blood cells. Additionally, this nutrient appears to facilitate the mobilization of iron from storage sites to the developing red blood cells for incorporation into hemoglobin, the oxygen carrier in red blood cells. Deficiency among children in developing nations is the leading preventable cause of "blindness". The earliest deficiency is night blindness. A mild deficiency may result in changes in the conjuctiva (corner of the eye) called Bilot's spots, but deficiency of this nutrient can lead to even bigger problems. A severe or a prolonged deficiency causes a condition called dry eye, which is characterized by changes in the cells of the cornea which may result in corneal ulcers, scarring, and blindness. Vitamin A deficiency can be considered a nutritionally acquired disease. For this reason, a good liquid supplement is a must for this vital nutrient. Even children who are mildly deficient have a higher incidence of respiratory disease and diarrhea as well as a higher rate of mortality from infectious disease as compared with children who consume sufficient amounts of this nutrient. Foods that provide sources include cod liver oil, fortified breakfast cereals, eggs, butter, whole milk, 2% milk and non-fat milk (vitamin D added), sweet potatoes (canned and baked), pumpkin (canned), raw carrots, cantaloupe, mango's, spinach, broccoli, kale, collards, and pumpkin squash. LIQUID VITAMINS
The principal forms of preformed vitamin A (retinol) in supplements are retinyl palmitate and retinyl acetate. Beta-carotene is also a common source of this nutrient in supplements, and many supplements provide a combination of retinol and beta-carotene. There are several very good liquid vitamins and multi-liquid vitamins in today's market to select from that can assist with this nutrient and its processes.
Mother Nature Liquid Vitamins and Vitamin A Related Links
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