How do I know what an appropriate meal size is if I have diabetes?

How do I know what an appropriate meal size is if I have diabetes?

Anne Peters, MD, FACP, CDE (Professor and Director of Clinical Diabetes Programs, USC Keck School of Medicine) gives expert video advice on: Is it possible to prevent type 1 diabetes?; Is it possible to prevent type 2 diabetes?; What environmental factors contribute to diabetes? and more...