[jerf]

"Winnipeg, Manitoba" ... "only need 15 minutes of sunshine per day to get your recommended dose of Vitamin D"

That doesn't apply to you most of the time, unfortunately. Vitamin D is the result of UVB exposure. For significant portions of the year, you don't get very much [1], compare with, say, [2] Orlando Florida in the US. 10-15 minutes is for a UV index of 7 [3], so that's only 4-6 months out of the year for you. And just based on my couple minutes with Google here, that number may also include the assumption that you're not just "out in the sun" for 15 minutes, but basically sunbathing. Lesser exposure may take longer: [4] Winter times can be effectively impossible because you can't sunbathe at 10 below (regardless of which scale I'm talking about) and you're not going to spend the requisite hours in the sun for what little skin is exposed. Or they can be outright impossible if your skin is dark enough.

[1]: https://winnipeg.weatherstats.ca/charts/forecast_uv-monthly....

[2]: https://nomadseason.com/uv-index/united-states/florida/orlan...

[3]: https://overcomingms.org/program/sunlight-vitamin-d/uv-index...

[4]: https://vitamindwiki.com/dl2105?display

[soperj]

I grew up on the Canadian praries. -10C is basically shorts weather.

edit: seriously though, anything warmer than -10C you'll definitely see kids in shorts. I go skiing in shorts every year.

[IAmBroom]

Wear a g-string if you want. It doesn't make the sunlight any brighter in winter.

[pavel_lishin]

But it does expose more skin, which [3] recommends!

Sadly, it doesn't say how long you should exposure yourself with a UV index of 1, which is what Winnipeg has today, and it's not even proper winter yet.

[jerf]

Yes, yes, you're an invincible winter god upon whom the temperature means nothing. Let us all acknowledge that and bow before you.

Now tell me everyone is doing that, all the time. I also live fairly north, which is part of why I've learned this about Vitamin D in my own research, and I can't help but notice that stores selling winter coats and gloves and other assorted cold gear don't go out of business ever year because nobody is buying them. Nor do I walk through a crowd of people in the middle of winter and have people point and laugh at me because I'm the only one in a coat.

Come on. You're just arguing to argue and swagger a bit, not because you actually think people are getting enough sun exposure in the middle of winter to get enough Vitamin D and there's nothing to worry about.

[soperj]

Just because you're a jerf, doesn't make me one too. Stores aren't going out of business because it gets below -10 regularly.

[zdragnar]

I'm not sure that people downvoting you have been around northerners much. Down here in the upper midwest US, we tend to consider 4 or 5C to be shorts weather in the spring. I've a friend who would wear flip flops / sandals outside down to roughly -10C.

Then again, most people aren't getting the equivalent of 15 minutes of index 7 UVB exposure at those temperatures, so it's not quite the same thing, but still.

[_vqpz]

People are downvoting because it has nothing to do with the comment they're replying to or the original post. Most people are well aware temperature is relative too, I live in the American South and there are certainly people here who will wear shorts in cold or freezing weather too.

[soperj]

> Winter times can be effectively impossible because you can't sunbathe at 10 below