Here in Sweden it's obligatory (by law)[1] to fortify some foods (dairy products) with vitamin D. Both adults and children are notorious dairy consumers. So I d

Here in Sweden it's obligatory (by law)[1] to fortify some foods (dairy products) with vitamin D. Both adults and children are notorious dairy consumers. So I don't think that assumption holds. [1] https://translate.google.com/translate?hl=&sl=sv&tl=en&u=https%3A%2F%2Fkontrollwiki.livsmedelsverket.se%2Fartikel%2F448%2Flivsmedel-som-maste-berikas https://translate.google.com/translate?hl=&sl=sv&tl=en&u=htt...