Michael Econs, M.D., F.A.C.P., F.A.C.E., who directs the Division of Endocrinology and Metabolism, has used a combination of clinical and molecular research to substantially advance the field of metabolic bone disease. Contributions include identification of the genes responsible for X-linked hypophosphatemic rickets and autosomal dominant hypophosphatemic rickets. He has also made contributions in understanding the genetics of osteoporosis and autosomal dominant osteopetrosis. He is on the editorial boards of both Endocrinology and The Journal of Clinical Endocrinology and Metabolism and is a member of the Central Society for Clinical Investigation and the American Society for Clinical Investigation. He is a highly sought after lecturer, speaking on various topics in metabolic bone disease at numerous academic institutions and medical/scientific meetings.