According to the CDC, 209,292 men were diagnosed with prostate cancer and nearly 15% of that number of men died from prostate cancer. The fact that something as simple as a vitamin D supplement could shrink prostate cancer tumors is huge news, and surely very welcome for many at-risk men. The results aren't definitive, but, as we recently discussed in a LivingHealthy article titled 'The Must-Have Vitamin Most People Are Lacking', there are so many great reasons to up your vitamin D intake for both men and women. As writer Melissa Walker puts it, '...vitamin D plays key roles in calcium consumption and bone health. Deficiency has been shown to lead to an increased risk of Alzheimer’s, cancer and various diseases from cardiovascular to autoimmune disorders.'