New research about the safety of Vitamin B12 supplements is raising red flags for mesothelioma patients and those at risk for mesothelioma. A major international study published in the International Journal of Cancer suggests that too much Vitamin B12 in the body may be a cause of lung cancer. The study included researchers from top institutions like Brigham and Women’s Hospital, Harvard Medical School, the University of Pittsburgh, the American Cancer Society, and the National Cancer Institute. Pleural Mesothelioma and Lung Cancer Pleural mesothelioma has a lot in common with lung cancer. It develops in the cells of the membrane around the lungs. As mesothelioma spreads, the membrane becomes less pliable, making it hard for the lungs to expand normally….