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Do UV lights in nightclubs give you vitamin D?

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Essential info for your next rave.

Asked by: Nic Alford, Ilfracombe

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No, for two reasons. First, UV lights in nightclubs typically output at a wavelength of 365nm or longer. This is at the visible end of ultraviolet (which is why you can see a faint purple tinge to the light) and it isn’t energetic enough to trigger vitamin D synthesis. You need UVB light with wavelengths shorter than 315nm for that. Second, indoor lights are only one-thousandth as bright as normal daylight.


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luis villazon
Luis VillazonQ&A expert

Luis trained as a zoologist, but now works as a science and technology educator. In his spare time he builds 3D-printed robots, in the hope that he will be spared when the revolution inevitably comes.

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