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We're learning more about what Vitamin D does to our bodies
(www.technologyreview.com)
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this post was submitted on 29 Nov 2025
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Just go outside (if you're in a zone that has enough annual sun). At least in the summer months.
That's the best source, as it helps your body produce the specific form it needs (because there are a few).
Supplementation only works when there's a massive deficit, as it's not necessarily the exact form a given person needs.
Tell me you live in NA without telling me you live in NA.
Brussels is on the same latitude as Calgary, and not only does daylight last less than 8 hours but thanks to the coastal climate it's not abnormal to only get single digit hours of sunlight per month (5/7th of which are when we're stuck in an office). Rest of the time is either rainy or cloudy, neither of which is useful to find stray UVB. London has basically the same climate.
In the winter it's not even useful to commute by bicycle, because it's dark outside both ways. What the fuck do you want from me doctorman. I'll be gobbling up those supplements because my Vitamin D deficiency is the least surprising outcome of working an office job in Belgium in winter.