Is the vitamin D that our skin makes when exposed to the sun's rays natural or synthetic?

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Physics

Lea Yoder

10 July, 15:05

Is the vitamin D that our skin makes when exposed to the sun's rays natural or synthetic?

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Paisley · Answer 1

When your skin is exposed to sunlight, it makes vitamin D from cholesterol. The sun's ultraviolet B (UVB) rays hit cholesterol in the skin cells, providing the energy for vitamin D synthesis to occur. Vitamin D has many roles in the body and is essential for optimal health (2)