Sunlight through glass does not provide Vitamin D

Re:Sunlight through glass does not provide Vitamin D by raxxorrax on Monday February 25, 2019 @07:52AM (#19245234)

A few applications à 15 min with a mercury high pressure lamp with a good reflector and you look like you went to the Caribbean for holidays. Maybe add a filter for UV-C, but there is no ionizing radiation. Just show any lamp in question to your favorite dermatologist. If he seems unhappy, you have the chosen the right lamp.

Jokes aside, skin is very photo-active and I do think lamps can help greatly against these kind deficiencies.

Most lamps emit a line spectrum though, so it is not like real sunlight. I wonder if that is the reason people going to solaria often seem to have weird skin tones. Ask a dermatologist and don't forget eye protection.

Apart from that it has the same side effects as sun exposure. Too much leads to skin aging, sunburn, cancer, etc.

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Re:Sunlight through glass does not provide Vitamin D by manmal on Monday February 25, 2019 @11:38AM (#19246810)

Those side effects can be mitigated or at least reduced by adding extra infrared or red light. Eg sunburns are prevented or greatly reduced by treating with near infrared either before or after UV exposure.

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Re:Sunlight through glass does not provide Vitamin D by pas on Monday February 25, 2019 @03:51PM (#19249341)

Could you explain please how/why IR helps with sunburn? :o

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Re:Sunlight through glass does not provide Vitamin D by manmal on Tuesday February 26, 2019 @08:07AM (#19253911)

There are some interesting papers turning up if you google „pubmed infrared sunburn“. One of these: https://link.springer.com/article/10.1007/BF00373376

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