As a dark-skinned developer, I used to feel terrible when I was in Germany/US for over 2 months - to the point of being suicidal. It was like my body and mind was breaking down. Colds, migraines, illness, body aches, joint pain. Only later was I diagnosed with acute vitamin-D deficiency.

Vitamin-D supplements turned around my life like a miracle. Nowadays I pop myself with every single vitamin-<anything> tablet in the market.

I tried Sunlight, but Sunlight in northern latitudes is a joke.

If you have darker skin yes. But I always thought that white skin is an evolutionary adaptation to the reduced levels of sunlight available at Northern latitudes.

It's more about the colour of skin * place of residence interaction than anything else.

> I tried Sunlight, but Sunlight in northern latitudes is a joke.

hahaha, brilliant!

In the UK, April 2020 was the sunniest April on record (224 hours of bright sunshine), and May 2020 was the sunniest month on record (626 hours).

Now, how much time UK citizens spent in the sun compared to those in other countries is a different question, but "less sun" doesn't appear to be the answer at face value.

[1] https://www.metoffice.gov.uk/about-us/press-office/news/weat... [2] https://www.metoffice.gov.uk/about-us/press-office/news/weat...

You also need the sun at a higher angle to get enough UV exposure (vitamin D creation is triggered by UV B exposure).

More sunshine isn't enough.

The UV responsible for vitamin D production effectively does not penetrate glass so it depends how much time people actually go outside.

Yes I've been interested in this theory as well. Also see the number of deaths in carehomes - where a lot of people spend all days indoors.

Let's just say I've been taking my Vit-Ds for the last 3 months!

Care homes house at risk people that are susceptible to getting sick from anything. They live in close quarters and are touched by lots of workers throughout the day. I doubt Vitamin D and indoors has anything to do with it.

It certainly doesn’t help.