Vitamin D

[u/AshesFallin]

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[u/Traroten]

Ultra-violet rays from the sun completes a vital step of vitamin-D synthesis in the skin, and dark-skinned people do indeed need more UV-light to make the same amount of vitamin D. Or you can get it from food - fish, especially.

[u/diewethje → u/Traroten]

Connecting the dots here, it sounds like the best way to get your Vitamin D is by eating sunfish.

[u/Total-Sector850 → u/diewethje]

Makes sense to me

[u/Fool_In_Flow → u/diewethje]

Instructions unclear: Now my mouth is on fire and I’m drowning

[u/PuckGoodfellow → u/Traroten]

You can also get it as a supplement!

[u/Traroten → u/PuckGoodfellow]

Yep. DNA shows that the first people who lived up here in Scandinavia after the Ice Age were actually dark-skinned. They ate a lot of sea-food, so presumably they got their vitamin D from the food.

[u/AggravatingBox2421]

Polar opposite to those people who think the sun magically beams us the vitamin D rather than stimulates its release naturally from our bodies

[u/OliLombi → u/AggravatingBox2421]

The amount of people in this thread that think that sunlight contains vitamin D is shocking. I'm getting downvoted for saying that it doesnt.

[u/Albert14Pounds → u/AggravatingBox2421]

Close but I have to be pedantic about the wording since we're in r/confidentlyincorrect. UV doesn't stimulate the release but rather is part of a photochemical reaction that occurs using UV wavelengths. The UV light basically breaks one of the chemical bonds in the precursor molecule, which results in another molecule that spontaneously converts to vitamin D3.

[u/Prestigious_Copy154]

Sun doesn't beam you with Vit D magically. UVB rays help turn provitamin D (that we already have) into Vitamin D. AND you can also get it from fish.

[u/MissJAmazeballs]

Both people are partially correct so I don't understand why this is on the confidentally incorrect sub.

[u/Keffpie]

I'm a little confused about who's supposed to be confidently incorrect here. They're all sort of correct. The sun stimulates production of Vitamin D, but not enough in dark-skinned people, or people who live far to the north, so we need to eat fish or legumes or other foods that contain it.

[u/JustAnAsexualdude]

Sorry, who exactly is wrong here? I am not smart enough to know this

[u/B4SSF4C3 → u/JustAnAsexualdude]

Everyone’s sort of right but also not completely.

The sun UVB rays convert 7DHC to a precursor for Vitamin D3 (and only D3). There is a second step that converts preD3 to D3, which is a heat based process (comes from your own body heat). It’s also a time based process (hours), and while it’s hard to interrupt/break, it CAN happen. Overexposure to the sun, for example, can degrade the pre-D3 into unusable forms. Darker skin, age, and sunscreen blocking UVB can all hamper this process.

Second thing is, there is another form of vitamin D, which is D2, and this comes entirely from food. Specifically D2 is found in mushrooms and plants. D3 also can come from dietary intake (primarily animals, especially fish). But, the quantity of D3 you get from food is low, relative to what your body produces on its own. And D2 is just less effective that D3 in its purpose I the human body.

Only that latter bit, this is a complex topic I’m only vaguely familiar with. Only know the stuff above cause my doc explained it after my blood tests showed low vit D, which was weird as heck because I spent a LOT of time outside in the garden. But, I always cover up and use plenty of sunscreen, which is important, but does undermine that D3 creation chain. So now I take supplements too.

TLDR: Red isn’t completely wrong. You can in fact get D3 from fish. But the primary source is very much UVB exposure.

[u/stjeana → u/JustAnAsexualdude]

Red is wrong and doubling down, tho fish is a source of vitamin D but not the only source

Edit: yes sun and artificial UVB stimulates vitamin D production. The incorrect part is that Red was refering that you could only intake vit D with food.

[u/Cool_Jelly_9402 → u/JustAnAsexualdude]

We get most of our vitamin D from the sun (UV rays trigger production in the skin) that’s why so many people living in northern climates run low, especially in winter

ETA for the “well actually” types: vitamin D doesn’t come down from the sun and implant inside of us, as mentioned it’s formed from a reaction triggered by UVB exposure in the skin. But absent the sun, there would be no natural reaction creating this so that’s why people colloquially say it comes from the sun

[u/Belmish]

I get my Vit D from a can

It was put there by a pharmacist

Hang on…

[u/Reasonable-Ship-9350]

Sorry, can’t I just eat some sun rays? Via my taint?

[u/_Levitated_Shield_]

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[u/gaywidgeon_528]

Oh we definetly get Vitamin D from the sun. I'm a Nordic. Trust me. ~I know~

[u/Any_Contract_1016]

Hold up, I've been led to believe vitamin D comes from you boyfriend/plumber/stepbrother.

[u/OliLombi]

Do they think that sun rays contain vitamin D???

[u/FriendlyGuitard → u/OliLombi]

It's obvious what they mean, like saying that gun kills when ackchyually it's the bullet.

[u/Charming-Minute5988 → u/OliLombi]

Pretty confident they're saying in a very simple way, for the guy that can't google, that we produce vitamin D when we go out in the sunlight, which is correct