New research presented at the American Society of Clinical Oncology annual meeting earlier this month concluded that Vitamin D. if taken for at  least 3 years could extend cancer patients lives. Although the research showed vitamin D could extend the lives of cancer patients it did not show it could prevent cancer.  Researchers looked at data from cancer prevention from more than 79,000 patients in multiple studies randomlly comparing the use of vitamin D to a placebo over 3 years and relating this to cancer incidence and mortality.

Differences in mortality data for the two groups was statistically significant and showed the value of vitamin D for cancer patients.  Researchers stated that although the results are promising they do not identify the dosage and levels in the blood needed to obtain positive And they reaffrirmed that results showed that at least 3 years of taking vitamin D were necessare to show results. results.