High Vitamin D Levels associated with an 82% reduction in Breast Cancer Incidence

“We found that participants with blood levels of 25(OH)D that were above 60 ng/ml had one-fifth the risk of breast cancer compared to those with less than 20 ng/ml,” said principal investigator and co-author Cedric F. Garland, DrPH, adjunct professor in the UC San Diego Department of Family Medicine and Public Health. Risk of cancer appeared to decline with greater levels of serum vitamin D.

Breast cancer risk markedly lower with serum 25-hydroxyvitamin D concentrations 60 vs 20 ng/ml (150 vs 50 nmol/L): Pooled analysis of two randomized trials and a prospective cohort McDonnell SL, Baggerly CA, French CB, Baggerly LL, Garland CF, et al. (2018) Breast cancer risk markedly lower with serum 25-hydroxyvitamin D concentrations 60 vs 20 ng/ml (150 vs 50 nmol/L): Pooled analysis of two randomized trials and a prospective cohort. PLOS ONE 13(6): e0199265. https://doi.org/10.1371/journal.pone.0199265