| LurkerJ said: As for vitamin D, I hate to be that guy, but you don't pass vitamin D in your urine even if you ingest excess amounts. That would be vitamin B and C as they're water-based. Sun exposure isn't a guaranteed method of getting enough vitamin D especially if you live in a big city, as polluted air prevents the sun rays from forming vitamin D. With that said, the optimum levels of vitamin D are still being debated as many people with low vitamin D levels lead healthy lives well into their 70s/80s, so testing for deficiency is only advised when you experience symptoms of deficiency or if you belong to a certain age groups with increased risk of fractures. |
Air pollution is much less now, that's a plus :)
Oh look at that, dairy nutrition site recommends: Those who consumed milk once or more per day had a higher average vitamin D level than those who consumed milk less than once per day (68 nmol/L vs. 59 nmol/L);
https://www.sciencealert.com/covid-deaths-are-being-linked-with-vitamin-d-deficiency-here-s-what-that-means
A vitamin commonly produced by sun-exposed skin cells might play a role in preventing death by the coronavirus SARS-CoV-2, according to new research.
Preliminary results from a yet-to-be-peer-reviewed study carried out by scientists from the Queen Elizabeth Hospital Foundation Trust and the University of East Anglia have linked low levels of the hormone vitamin D with COVID-19 mortality rates across Europe.
vs
https://www.cebm.net/covid-19/vitamin-d-a-rapid-review-of-the-evidence-for-treatment-or-prevention-in-covid-19/
We found no clinical evidence on vitamin D in COVID-19. There was no evidence related to vitamin D deficiency predisposing to COVID-19, nor were there studies of supplementation for preventing or treating COVID-19.
There is some evidence that daily vitamin D3 supplementation over weeks to months may prevent other acute respiratory infections, particularly in people with low or very low vitamin D status. This evidence has limitations, including heterogeneity in study populations, interventions, and definitions of respiratory infections that include upper and lower respiratory tract involvement.
The current advice is that the whole population of the UK should take vitamin D supplements to prevent vitamin D deficiency. This advice applies irrespective of any possible link with respiratory infection.
If you can't go out in the sun or eat healthy, can't hurt to take vitamin supplements. But popping a couple pills now won't help one bit. But another 2 birds with one stone opportunity, UV lamps in stores. Kills viruses, stimulates vitamin D production :)
https://www.makersnutrition.com/news/2017-09-27-an-innovative-pairing-led-and-vitamin-d/
It's not the same wavelength though, UVB for vitamin D, UVC to kill viruses.
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