Which vitamin is primarily obtained from sunlight?

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Vitamin D is primarily obtained from sunlight because it is synthesized in the skin when it is exposed to ultraviolet (UV) rays. When UVB radiation from the sun hits the skin, it converts a cholesterol derivative into vitamin D3, which is then processed by the liver and kidneys into its active form, calcitriol. This process is essential for maintaining healthy bones, as vitamin D plays a crucial role in calcium absorption and bone metabolism.

While vitamins A, C, and E are important for various bodily functions, they are primarily obtained through dietary sources and are not synthesized by the body through sunlight exposure. Therefore, the unique ability of vitamin D to be produced directly from sunlight distinguishes it from the other vitamins listed.

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