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If deficiency is linked to all these maladies then why aren’t we seeing them occur with less frequency in areas that get full sun year round?

by xwdv 6y ago

0-_-0 6y ago
Do areas that get full sun year round have people with more vitamin D? Those places have people with darker skin which blocks vitamin D production. Actually, the only reason white people exist in the first place is because of vitamin D, so you would expect vitamin D to have strong positive effects based on this fact alone.
- tchaffee 6y ago
  > the only reason white people exist in the first place is because of vitamin D Is there a study to back up that claim? I haven't seen anything claiming to prove that lighter skin was a definite cause of a need for higher vitamin D levels. In fact, the article would seem to prove this theory wrong. Vitamin D supplementation does not help with much of anything as far as we can tell so far.
scott_s 6y ago
Linked does not mean caused by. In fact, this entire post is laying out the evidence that low Vitamin D is unlikely to cause any of these illnesses.
ComputerGuru 6y ago
You would actually have to compare (dark skinned people in equatorial regions, light skinned people in places with less sunlight) to (light skinned people in equatorial regions) and optionally against (dark skinned people in places with less sunlight), with group A being the control, group B being expected to fare better, and group C expected to date worse.
CyanLite2 6y ago
With some exceptions, in general we're much likely to be indoors nowadays than say... 300 years ago, regardless of how much sunlight is available. But it is hypothesized that people of color see higher frequencies of epithelial related diseases (high blood pressure, heart disease) because we're mostly indoors nowadays and the shorter stints outside aren't long enough to absorb enough sunlight through darker skin. Epidemiologists have typically assumed this is due to socio-economic reasons, but even in affluent black communities, we're still seeing outsized incidences of these disease than in "lighter shade" communities.

If deficiency is linked to all these maladies then why aren’t we seeing them occur with less frequency in areas that get full sun year round?

by xwdv 6y ago

If deficiency is linked to all these maladies then why aren’t we seeing them occur with less frequency in areas that get full sun year round?

0-_-0 6y ago

Do areas that get full sun year round have people with more vitamin D? Those places have people with darker skin which blocks vitamin D production. Actually, the only reason white people exist in the first place is because of vitamin D, so you would expect vitamin D to have strong positive effects based on this fact alone.

tchaffee 6y ago
> the only reason white people exist in the first place is because of vitamin D Is there a study to back up that claim? I haven't seen anything claiming to prove that lighter skin was a definite cause of a need for higher vitamin D levels. In fact, the article would seem to prove this theory wrong. Vitamin D supplementation does not help with much of anything as far as we can tell so far.

scott_s 6y ago

Linked does not mean caused by. In fact, this entire post is laying out the evidence that low Vitamin D is unlikely to cause any of these illnesses.

ComputerGuru 6y ago

You would actually have to compare (dark skinned people in equatorial regions, light skinned people in places with less sunlight) to (light skinned people in equatorial regions) and optionally against (dark skinned people in places with less sunlight), with group A being the control, group B being expected to fare better, and group C expected to date worse.

CyanLite2 6y ago

With some exceptions, in general we're much likely to be indoors nowadays than say... 300 years ago, regardless of how much sunlight is available. But it is hypothesized that people of color see higher frequencies of epithelial related diseases (high blood pressure, heart disease) because we're mostly indoors nowadays and the shorter stints outside aren't long enough to absorb enough sunlight through darker skin. Epidemiologists have typically assumed this is due to socio-economic reasons, but even in affluent black communities, we're still seeing outsized incidences of these disease than in "lighter shade" communities.