5 ms·

if this were true wouldn’t we see different levels of infection in southern latitudes bvs northern latitudes during winter? that’s what i’ve never understood ab

if this were true wouldn’t we see different levels of infection in southern latitudes bvs northern latitudes during winter? that’s what i’ve never understood about vitamin d and infection. covid or the flu hit florida just as bad as minnesota

bobsmooth 4y ago
Windows block most of the UV light that causes Vit D synthesis.
letmevoteplease 4y ago
"Panarese and Shahini ranked the 108 countries with at least 100 COVID-19 cases on 2 April 2020 by latitude, demonstrating visually that, overall, deaths per million were higher in the northern-most countries, whose citizens would be the most likely to be vitamin D deficient from the dark winter (198). Following up on Panarese and Shahini's work, Rhodes et al., compared the 120 countries with more than 150 COVID-19 cases by 15 April 2020, finding that COVID-19 mortality rates were significantly correlated with latitude (r = 0.53, p < 0.0001) (26). Rhodes et al., used a simple scatter-graph to illustrate that the COVID-19 mortality rates per million population were dramatically lower in countries with capitals south of 35°N, where sunshine in the time immediately preceding the pandemic made maintaining vitamin D levels possible (26)." https://www.frontiersin.org/articles/10.3389/fpubh.2020.00513/full https://www.frontiersin.org/articles/10.3389/fpubh.2020.0051...
- jiggawatts 4y ago
  The "folk wisdom" that colds cause the Common Cold has the correlation correct, but not the causation. During winter people get less Vitamin D and stay indoors in close proximity. The low temperatures do not make you sick. The secondary effects of the season-that-is-cold does.
  - protein_lense 4y ago
    Temperature and humidity can have a marked effect on the stability of enveloped viruses themselves. e.g. coronaviruses & RSV, which comprise a subset of the viruses responsible for common colds. Another common cold virus, Rhinoviruses, are non-enveloped.
    - jiggawatts 4y ago
      Which is true, but studies have shown that it is the increased time spent in the heated indoors that causes disease, not the time spent in the cold outdoors.
ilaksh 4y ago
Sure but there are a lot of people that barely go outside these days. Suppose they are wearing a hat and long sleeves and walk 60 seconds to their car. Even if you have nice big windows the UV doesn't pass through so inside regardless of where you are does next to nothing for you.
mrtweetyhack 4y ago

bobsmooth 4y ago

Windows block most of the UV light that causes Vit D synthesis.

letmevoteplease 4y ago

"Panarese and Shahini ranked the 108 countries with at least 100 COVID-19 cases on 2 April 2020 by latitude, demonstrating visually that, overall, deaths per million were higher in the northern-most countries, whose citizens would be the most likely to be vitamin D deficient from the dark winter (198). Following up on Panarese and Shahini's work, Rhodes et al., compared the 120 countries with more than 150 COVID-19 cases by 15 April 2020, finding that COVID-19 mortality rates were significantly correlated with latitude (r = 0.53, p < 0.0001) (26). Rhodes et al., used a simple scatter-graph to illustrate that the COVID-19 mortality rates per million population were dramatically lower in countries with capitals south of 35°N, where sunshine in the time immediately preceding the pandemic made maintaining vitamin D levels possible (26)." https://www.frontiersin.org/articles/10.3389/fpubh.2020.00513/full https://www.frontiersin.org/articles/10.3389/fpubh.2020.0051...

jiggawatts 4y ago
The "folk wisdom" that colds cause the Common Cold has the correlation correct, but not the causation. During winter people get less Vitamin D and stay indoors in close proximity. The low temperatures do not make you sick. The secondary effects of the season-that-is-cold does.
- protein_lense 4y ago
  Temperature and humidity can have a marked effect on the stability of enveloped viruses themselves. e.g. coronaviruses & RSV, which comprise a subset of the viruses responsible for common colds. Another common cold virus, Rhinoviruses, are non-enveloped.
  - jiggawatts 4y ago
    Which is true, but studies have shown that it is the increased time spent in the heated indoors that causes disease, not the time spent in the cold outdoors.

ilaksh 4y ago

Sure but there are a lot of people that barely go outside these days. Suppose they are wearing a hat and long sleeves and walk 60 seconds to their car. Even if you have nice big windows the UV doesn't pass through so inside regardless of where you are does next to nothing for you.

mrtweetyhack 4y ago