Or that population studies are not individual studies. Vitamin D 100% cures a vitamin D deficiency. And Vitamin D deficiency 100% causes disease. This study w

Or that population studies are not individual studies. Vitamin D 100% cures a vitamin D deficiency. And Vitamin D deficiency 100% causes disease. This study was only looking at how vitamin D supplementation affected a large swath of people, both those deficiency and those replete. So why is everyone surprised the results ar inconclusive?