Vitamin D May Take Gas Pedal Off Prostate Cancer, University of Toronto Study  
4/2/2012 7:20:04 AM

Higher oral doses of plain vitamin D raised levels of calcitriol in prostate tissue. Higher prostate levels of calcitriol, a hormone made from vitamin D, corresponded with lower levels of the proliferation marker Ki67 and increased levels of cancer growth-inhibitory microRNAs in prostate cancer cells, according to data presented at the AACR Annual Meeting 2012, held here March 31 -- April 4.