[wuwuno]

Depending on skin type but people exposed to 30 minutes of sun at noon produces between 10,0000 and 20,000 IU of Vitamin D3. As the angle of the sun lowers the UV rays get filtered by the atmosphere, which is why in winter you can't make Vitamin D if you are too far away from the equator.

I'm willing to bet that if the body produces that much Vitamin D3 that it's probably safe to take that much as a supplement.

[CyberDildonics]

I think anyone who has gotten a sunburn skiing or snowboarding would disagree.

[spfzero]

The comment is making the case that you might expect it to be safe to take as much D3, as your body makes naturally with a small amount of sun exposure. It's not arguing that you should go skiing and get sunburnt.

[CyberDildonics]

> As the angle of the sun lowers the UV rays get filtered by the atmosphere, which is why in winter you can't make Vitamin D if you are too far away from the equator.