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The absorption of vitamin D from the sun is not really accurate because it does not absorb vitamin D from sunlight, Walau bagaimanapun, our skin produces vitamin D after sun exposure, most of you probably know, just 15 minutes of sun for 24 hours is sufficient for our skin at a sufficiently high level of calcitriol (vitamin D) to produce. What most people do not know is that the skin to produce vitamin D may be hampered by different factors can cause or exacerbate vitamin D deficiency.Factor # 1: Sun protection: for the skin to make calcitriol, and the skin becomes necessary UVB rays of the sun, sunscreens that block UVB and then Sunshine also reduces the skin's ability to produce vitamin D.

This is important to keep in mind all that sunscreen that protects against the harmful effects of solar radiation, which can be caused by the rays themselves, including premature skin aging and Skin malignancy.Factor # 2: Content of melanin in the skin: The degree of skin pigmentation determines largely as calcitriol skin tissue can the sun the darker the skin pigmentation, the more difficult for the skin to vitamin D. This is the production of melanin as a natural sunscreen to filter UVB, which is important for vitamin D manufacturing.

Factor # 3: Your weight: Calcitriol is a fat-soluble vitamin, which means that it is deposited in your body fat . The more fat you have, the more vitamin D (calcitriol) is deposited in fat stores, which means less vitamin D made his way into the bloodstream, called bioavailability reduced. The vitamin D deficiency is strongly correlated with obesity and a large number of studies have shown that there is significantly reduced bioavailability of vitamin D in obese patients people.Factor N. 4: Age: Age cut the capacity of the skin to produce vitamin D from the sun.

Scientific studies have shown that seventy 4x zoom makes no vitamin D from the sun than less than 20 tahun. Recognition of this difference is very important for the elderly a lot of time to spend in the sun, and only on daily exposure to the sun in their needs.Although vitamin D our bodies are capable of producing enough vitamin D sununder from ideal conditions, these factors influence the effectiveness of vitamin D synthesis in the skin. E 'need to understand that vitamin D obtained from food sources is not affected by these constraints.

The FDA recommended daily vitamin D 400 IU, Walau bagaimanapun, several scientific studies that challenged the lowest dose and a recommended daily dose is higher. The National Institute of Medicine offers official 2000 IU per day for healthy adults. At doses of fat soluble vitamins D greater than 10,000 IU per day can be toxic, unless prescribed by a doctor who has checked your vitamin D circulating levels.

Tagged sebagai: calcitriol, decreased bioavailability, scientific studies, kulit, studies demonstrated, sun, uvb radiation, vitamin, kekurangan vitamin, vitamin sun