Williams syndrome expert, Dr. Colleen Morris discusses the ways in which calcium and Vitamin D affect individuals with Williams syndrome, followed by a lengthy question and answer session on genetics and medical issues in general.

Colleen A. Morris, M.D., is a clinical geneticist who has been conducting research on the natural history and genetics of Williams syndrome since 1985. She is Chief of the Genetics Division and Professor of Pediatrics, Pathology and Lab Medicine at the University of Nevada School of Medicine in Las Vegas. She is the clinician who was part of the research team that discovered the genetic cause of Williams syndrome.

Dr. Morris' research focuses on determining the role of the deleted genes on chromosome seven in various symptoms found in WS. She also studies individuals with symptoms overlapping Williams syndrome who do not have a chromosome seven deletion. Dr. Morris is a long-standing member of the WSA Medical Advisory Board.