4/18/2023 0 Comments Vitamin r song meaning![]() ![]() Areas with higher ozone breakdown (assessed by Dobson units) appear to have higher UVB radiation.A combination of latitude and season, with the Northern Hemisphere (Boston and Edmonton latitude 42.2-55°N) failing to produce any vitamin D between October and March.Weather patterns or seasons that reduce solar exposure, such as clouds or darkness.Several studies note that Northern USA (relative to Southern USA) experience less UVB radiation, which appears to be related to cancer risk Latitudes that are further away from the equator tend to reduce synthesis rates due to less exposure to solar radiation.In some scenarios, the rate of vitamin D synthesis is reduced such as: Synthesis of vitamin D can occur after contact with the sun, where bodily stores of 7-dehydrocholesterol (a derivative of cholesterol) converts to cholecalciferol (vitamin D3). The old recommended daily allowance of vitamin D is currently seen as insufficient for adults, despite being sufficient to prevent rickets in offspring. This 400IU target intake, as well as the actual overall intake of Vitamin D3, is commonly seen as deficient in adults as 400IU cannot ideally sustain circulating levels between 50-75nmol/L, which is seen as ideal. Even currently, an intake of 400IU (despite keeping the mother in a clinically 'deficient' state according to current definitions) is sufficient to prevent the occurrence of rickets. Previously, the RDA was set at 400IU in 1997 (International Units, approximately equal to 10mcg Vitamin D3) as this dose is sufficient to reduce the risk of rickets in children. Cod liver oil effectiveness varies, depending on the processor and the method of analysis. Cod liver oil at around 2.54-2.78mcg/mL although labels would be more precise on a product-specific basis as some are lower than this estimate such as 33.5-172.3IU/mL ĭairy appears to be the best food source for vitamin D3.Milk, being the most common source of vitamin D in the USA and has trended downwards in recent decades.Vitamin D is a term used to refer to a group of related molecules, which collectively increase the body's pool of 25-hydroxyvitamin D (circulating form of Vitamin D) and subsequently 1,25-dihydroxyvitamin D (the active hormone). It was initially found to be a component of Cod Liver Oil, and credited as the 'anti-rachitic' (against rickets) compound to explain how Cod Liver Oil was effective in treating rickets. Vitamin D is a compound classified as an essential vitamin that derives its name from simply being discovered shortly after Vitamins A, B (prior to the realization that Vitamin 'B' was not a single molecule), and Vitamin C. ![]()
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