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Nutrient deficiencies that commonly affect older adults include vitamin B12, iron, vitamin D, and calcium. Unbalanced dietary patterns in this age group also lead to low levels of omega-3 fatty ...
Experts agree that eating wholesome, healthy meals, reducing calories, and increasing physical activity are the best ways to lose weight and keep it off long-term. Still, many people turn to ...
Vitamin A supplements top Norman's do-not-fly list for his patients over 50. "Studies have shown that a healthy and diverse diet will get you enough vitamin A, and food sources are the best ...
Vitamin A status involves eye health via two separate functions. Retinal is an essential factor in rod cells and cone cells in the retina responding to light exposure by sending nerve signals to the brain. An early sign of vitamin A deficiency is night blindness. [6] Vitamin A in the form of retinoic acid is essential to normal epithelial cell ...
Preformed vitamin A is fat-soluble and high levels have been reported to affect metabolism of the other fat-soluble vitamins D, [24] E, and K. The toxic effects of preformed vitamin A might be related to altered vitamin D metabolism, concurrent ingestion of substantial amounts of vitamin D, or binding of vitamin A to receptor heterodimers .
Retinol, also called vitamin A 1, is a fat-soluble vitamin in the vitamin A family that is found in food and used as a dietary supplement. [3] Retinol or other forms of vitamin A are needed for vision, cellular development, maintenance of skin and mucous membranes , immune function and reproductive development. [ 3 ]
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