What in the world do we do with vitamin D?
Some proposed health benefits bone health (decreased bone fractures) cancer prevention heart health Challenges with Vitamin D The lab tests used to measure vitamin D are not standardized and currently are somewhat imprecise. This makes it difficult to determine a threshold for recommending supplementation. Based on a review of multiple studies, the Institute of Medicine recommends keeping a the vitamin D level between 20 and 40 ng/mL. Other organizations recommend keeping th