(Miami Beach, Fl.) -- Vitamin D is found in milk and other foods like fish and eggs. It's also found in a lot of supplements making all sorts of medical claims. As part of witf's Facing Cancer Together multimedia project witf's Craig Layne talked with a Pennsylvania medical student who has just published a study on Vitamin D and its possible effects on cancer. Thomas Churilla conducted that study. He's a medical student at the Commonwealth Medical College in Scranton who presented his findings to the American Society for Radiation Oncology at a conference in Florida.