Our ancestors didn't spend all day in an office and only got to go home when it was dark outside. In a country like Sweden, you might not get sun when you go

Our ancestors didn't spend all day in an office and only got to go home when it was dark outside. In a country like Sweden, you might not get sun when you go to work and home again. So spending all day outside hunting might have given you enough. I feel better with Vitamin D, especially during the winter. Was also some research on how Somalians developer autism because of a severe lack of sun in Sweden: http://www.thelocal.se/20110328/32862 http://www.thelocal.se/20110328/32862