As mum said. Children, go out into the open air !

 A paradox is concept which holds condradictory traits. Recently I saw a youtube video about vitamin D and outcomes of Covid 19. Research has discovered that Covid 19 patients with low blood levels of vitamin D were less likely to survive than those with higher values. But on the other hand substitutions of vitamin D early did not alter this outcome. And that's a paradox, how come?

This is a  classic topic when examining research result. There can be many other factors which are working beside the vitamin D. In the video Roger Seheult  Med Cram  tells us about  other studies about correlations  of sunshine and  covid 19.  And when being out in the open air  and the daylight-sunlight several other things happen to the body. One thing we know happen is that daylight is important for the production of melatonin in the mitocondrias. But there are also many things we don't know about yet which perhaps happens to us when we are out in the sunlight -daylight. So that melatoninproduction in the mitocondrias is only a hypothesis.

 In the mitocondrias the energy which the cells need is produced. When energy is produced sideproducts are also produced which can cause oxidative stress. This stress can hurt and destroy  proteins in the cell and in the long run this can cause  chronic inflammation and disease. The melatonin functions as a very strong antioxidant and counteract the  oxidative stress. Perhaps this is what happens when covid 19 seems to be worse in the northern parts where there is less sunshine.