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It could be that Vitamin D levels are correlated with sun exposure, which improves health via a hormesis response to oxidative stress on the blood in the skin a

It could be that Vitamin D levels are correlated with sun exposure, which improves health via a hormesis response to oxidative stress on the blood in the skin and eyes. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6122858/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6122858/

SketchySeaBeast 6y ago
> Vitamin D levels are severely low in the aging population especially in Spain, Italy and Switzerland. This is also the most vulnerable group of population for COVID-19. It could also be that age is the important factor here and that Vitamin D actually isn't relevant at all - as they said Vitamin D is low in all those populations already.
- vixen99 6y ago
  No, it is relevant because "a cause and effect relationship has been established between the dietary intake of vitamin D and contribution to the normal function of the immune system" & "The (EFSA) Panel considers that the role of vitamin D in the functioning of the immune system applies to all ages, including children." European Food Safety Authority: https://efsa.onlinelibrary.wiley.com/doi/pdf/10.2903/j.efsa.2015.4096 https://efsa.onlinelibrary.wiley.com/doi/pdf/10.2903/j.efsa.... Worth noting that in general and very roughly, at least 85% on average, of old people survive infection with Covid-19 a group which includes those in their 90s.
  - deleted 6y ago
    [deleted]
  - SketchySeaBeast 6y ago
    So if we assume most old people are low in vitamin d, but also most old people survive, does it tell us nothing?
firethief 6y ago
Sun also improves health by killing viruses that can cause illness, and by reducing time people spend enclosed in unventilated spaces, where they are prone to respiratory pathogens.
- AuryGlenz 6y ago
  I’ve never bought the argument that the flu season is caused by people being indoors more (and then contracting or spreading a virus). Most people are still going to their jobs just as much, which is probably where they’d get it anyways. Schools being closed might have an effect, though. Anyways, n=1 but my immune system has seemingly greatly improved from vitamin D supplementation. When I get a cold now there’s at least a chance that I’ll only have major symptoms for a few days, instead of the usual 2 weeks.

SketchySeaBeast 6y ago

> Vitamin D levels are severely low in the aging population especially in Spain, Italy and Switzerland. This is also the most vulnerable group of population for COVID-19. It could also be that age is the important factor here and that Vitamin D actually isn't relevant at all - as they said Vitamin D is low in all those populations already.

vixen99 6y ago
No, it is relevant because "a cause and effect relationship has been established between the dietary intake of vitamin D and contribution to the normal function of the immune system" & "The (EFSA) Panel considers that the role of vitamin D in the functioning of the immune system applies to all ages, including children." European Food Safety Authority: https://efsa.onlinelibrary.wiley.com/doi/pdf/10.2903/j.efsa.2015.4096 https://efsa.onlinelibrary.wiley.com/doi/pdf/10.2903/j.efsa.... Worth noting that in general and very roughly, at least 85% on average, of old people survive infection with Covid-19 a group which includes those in their 90s.
- deleted 6y ago
  [deleted]
- SketchySeaBeast 6y ago
  So if we assume most old people are low in vitamin d, but also most old people survive, does it tell us nothing?

firethief 6y ago

Sun also improves health by killing viruses that can cause illness, and by reducing time people spend enclosed in unventilated spaces, where they are prone to respiratory pathogens.

AuryGlenz 6y ago
I’ve never bought the argument that the flu season is caused by people being indoors more (and then contracting or spreading a virus). Most people are still going to their jobs just as much, which is probably where they’d get it anyways. Schools being closed might have an effect, though. Anyways, n=1 but my immune system has seemingly greatly improved from vitamin D supplementation. When I get a cold now there’s at least a chance that I’ll only have major symptoms for a few days, instead of the usual 2 weeks.