Which one of the following vitamins is synthesized in our own skin?

[amp_mcq option1=”Vitamin A” option2=”Vitamin B” option3=”Vitamin C” option4=”Vitamin D” correct=”option4″]

This question was previously asked in

UPSC NDA-2 – 2015

The correct answer is D) Vitamin D.

Vitamin D (specifically Vitamin D3 or cholecalciferol) is synthesized in the skin when it is exposed to ultraviolet B (UVB) radiation from sunlight. A precursor molecule, 7-dehydrocholesterol, present in the skin, is converted into Vitamin D3 under UV light.

Vitamins A, B (group of vitamins), and C are primarily obtained from dietary sources. While the body has mechanisms to utilize and process these vitamins, they are not synthesized in the skin in the same way Vitamin D is.

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