The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
Depending on the time of year, we can make it in our skin. And depending on how much melanin we have on our skin, or whether or not we're wearing sunscreen or how old we are, there's a sliding scale on how efficient that process is.
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Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
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Multiple factors can impede vitamin D synthesis from UV exposure. Highly individual.
Yeah. And I think again, depending on how much melanin you have in your skin, depending on your age, you know, you're anywhere between two or four times less likely to make as much as you were when you were younger. You know, depending on all that stuff. Are you wearing sunscreen, where you live, what time of year it is all those factors.
So because melanin is, you know, is a natural sunscreen. Sunscreen also does that. People wear a lot of sunscreen nowadays. So there's there's many different reasons why people are not getting as much vitamin D in our modern day world.
we make vitamin D3 in our skin so UVB radiation is essential to make vitamin D3 anything that blocks out UVB radiation is going to stop that production of vitamin D so we're talking sunscreen um melanin which is the dark skin pigmentation that protects us from the burning rays of the sun so also is a natural sunscreen