UV light stimulates the production of which vitamin?

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Prepare for the ITEC Beauty Specialist Test. Study with flashcards and multiple choice questions, with hints and explanations for each. Ace your exam!

Multiple Choice

UV light stimulates the production of which vitamin?

Explanation:
UV light triggers production of vitamin D in the skin. When UVB rays reach the skin, they convert 7-dehydrocholesterol in epidermal cells to previtamin D3, which then becomes vitamin D3 (cholecalciferol). This vitamin is carried to the liver and kidneys to be activated, supporting calcium absorption and bone health. Vitamins A, C, and E are not produced by UV exposure; they come mainly from diet and supplements. While sunlight can raise vitamin D levels, excessive exposure increases the risk of skin damage and cancer, so balance is important.

UV light triggers production of vitamin D in the skin. When UVB rays reach the skin, they convert 7-dehydrocholesterol in epidermal cells to previtamin D3, which then becomes vitamin D3 (cholecalciferol). This vitamin is carried to the liver and kidneys to be activated, supporting calcium absorption and bone health. Vitamins A, C, and E are not produced by UV exposure; they come mainly from diet and supplements. While sunlight can raise vitamin D levels, excessive exposure increases the risk of skin damage and cancer, so balance is important.

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