BMJ - Vitamin D and Mortality

"Genetically low vitamin D concentrations and increased mortality: mendelian randomisation analysis in three large cohorts"

"Conclusions Genetically low 25-hydroxyvitamin D concentrations were associated with increased all cause mortality, cancer mortality, and other mortality but not with increased cardiovascular mortality. These findings are compatible with the notion that genetically low 25-hydroxyvitamin D concentrations may be causally associated with cancer and other mortality but also suggest that the observational association with cardiovascular mortality could be the result of confounding."

http://www.bmj.com/content/349/bmj.g6330