Serum Vitamin D Concentration and Prostate Cancer Risk: A Nested Case – Control Study

Prospective analysis.

Link: http://​​jnci.oxfordjournals.org/​​content/​​100/​​11/​​796.full.pdf

From conclusion:

“The findings of this large prospective study do not support the hypothesis that vitamin D is associated with decreased risk of prostate cancer; indeed, higher circulating 25(OH)D concentrations may be associated with increased risk of aggressive disease.”