Ask Lafeber


September 19, 2022

UVB and full spectrum lights

What is the latest advice on whether uvb/full spectrum lights impart any benefit, particularly with regards to vitamin D and calcium? If beneficial, which brands are recommended?


Hi Diana,

There still have not been any formal studies on full spectrum lighting, so the advice remains the same – and really it’s all guesswork. It’s a frustrating question to answer because there is not enough information to really know. I can refer you to my most recent response, and unfortunately, there isn’t anything new or proven.

full spectrum lighting


Thank you for asking Lafeber,


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