Michael Mannstadt, M.D., is Director of Bone and Mineral Metabolism at the Massachusetts General Brigham and Associate Professor in Medicine at Harvard Medical School, Boston, MA, USA. His clinical and research interests focus on diseases of bone and mineral metabolism with research spanning basic science, translational investigation, and clinical investigations. He has led landmark international studies of PTH replacement therapies for hypoparathyroidism and co-chaired international guidelines on parathyroid diseases. He served on numerous committees for the American Society for Bone and Mineral Research, as President of Advances in Mineral Metabolism and as a clinical advisor for the national patient group Hypoparathyroidism Association.