Far northern coastal climes historically have eaten huge amounts of fish, fish oils, seal and whale blubber, etc which are filled with vitamin D. So there are ways to get it through diet, just not many people want to eat that sort of diet.
Also this:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3417586/
If you are talking primarily about Scandis, I don’t know. Perhaps vitamin d is commonly supplemented. We’d have to know such things. But inadequate vitamin D levels does seem to lead to higher all cause mortality.
https://academic.oup.com/jcem/article/105/10/e3606/5867168
And then there is the question of whether longevity is the only goal here? High Vitamin D levels has been shown to have massive performance benefits for athletic performance.
Great point about the fish consumption.
The performance thing is a ruse, though. Western society sells everyone the myth that you can control your longevity, health, relationships, etc., by taking micro-actions that you and only you can do. It's the myth that if I gulp 500mg of vitamin L every day, I will never get cancer. And there are businesses who prey on that, even if I cannot blame them. People have a foundational need to believe they are in control of everything.
In Covid-related terms, this is the individualistic version of what we see in governments that feel they have to do
something to demonstrate and act as if in control, even when they are not. Many of us humans would rather do something to make themselves feel in control just for the illusion of it.
I have to like the Omicron branding in all that. Who does their marketing, btw?
Looking forward to the "Good King Omicron" Christmas carol they're gonna drop any day now.
It will be very interesting to see how the Western governments will react to Omicron if it really turns out to be so mild. It will be disgusting if they continue with the lockdowns and mandatory vaccinations.
Here's the crux of this challenge, though. Yes, if the vaccines work -- and they are only one element of what I feel needs to be a multi-prong strategy -- people who get Covid won't suffer as much. Great. But right now, our definition for getting into planes, let alone restaurants, is infection. Which is a whole other definition.
Because if this virus trajectory goes the way we want towards the endemic -- where it's relatively benign and commonplace -- the measures we take for infection are going to have to change. Because we don't prevent people coming into restaurants because they have the flu (which we probably should) or a basic sniffles and head-cold. If that's the standard, that won't make any sense as the virus becomes more harmless and ubiquitous.
We cannot be quarantining people for 10 days in hotels after coming down with a head cold every time they want to get on an airplane, especially as we desire the virus to spread with lower efficacy.