فيتامين د / Vitamin D

in #morocco6 years ago

فيتامين د هو الفيتامين المعروف بفيتامين الشمس؛ إذ إنّ المصدر الأساسي للحصول عليه هو تعرّض الجسم لأشعة الشمس حتى يُنتج الجسم هذا الفيتامين، وذلك عن طريق تعرّض الجلد للأشعة فوق البنفسجية من أشعة الشمس، فيقوم بتحويل الكولستيرول الموجود في الجلد عن طريق سلسلة من العمليات الحيوية إلى فيتامين د. ويعد تعريض اليدين والرجلين للشمس من خمسٍ إلى عشر دقائق، مرتين إلى ثلاث مرات في الأسبوع مدةً كافيةً لتزويد الجسم بحاجته من فيتامين د، بالإضافة إلى توافره بكميات محدودة في بعض الأطعمة

Vitamin D is the vitamin known as the sun's vitamin. The main source of the sun is the body's exposure to the body until the body produces this vitamin, by exposing the skin to ultraviolet light from the sun, it converts the cholesterol found in the skin through a series of biological processes to Vitamin D. The exposure of hands and feet to the sun from five to ten minutes, two to three times a week long enough to provide the body need of vitamin D, in addition to the availability of limited quantities in some foods.

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