I've always assumed that those results are caused by exercise, and since many people exercise outdoors, being outdoors more is correlated with better health, bu

I've always assumed that those results are caused by exercise, and since many people exercise outdoors, being outdoors more is correlated with better health, but the better health is actually caused by by the exercise, not the being outdoors. As for the circadian rhythm, SAS should embrace More Dakka [0] and cover his entire ceiling in bright white LED modules. He has Substack money to spend after all. I thought D3 was pretty good with absorption, though he could start drinking milk and take GLP-1 inhibitors to offset that if needed. [0]: https://thezvi.wordpress.com/2017/12/02/more-dakka/ https://thezvi.wordpress.com/2017/12/02/more-dakka/