People with diabetes are more likely to suffer depression, anxiety and anger if blood sugar levels are poorly controlled, U.S. researchers say. Dr. Satish Garg -- editor in chief of Diabetes Technology & Therapeutics and professor of medicine and pediatrics at the University of Colorado Denver -- said a better understanding of the relationship between glycemic variability and psychological disorders can lead to more effective strategies for patient management. \"Mood disorders and their association with poor glucose control that can lead to long-term diabetes complications are of great concern,\" Garg said in a statement. \"We still do not know which comes first. This needs further investigation, especially using newer technologies such as continuous glucose monitoring.\" Sue Penckofer of Loyola University Chicago in Maywood, Ill., and colleagues from University of Illinois at Chicago, Saint Mary\'s College, Notre Dame and Integrated Medical Development in Princeton Junction, N.J., conducted continuous glucose monitoring from a group of women with type 2 diabetes. The article \"Does Glycemic Variability Impact Mood and Quality of Life?\" found greater glycemic variability may be associated with negative moods and lower quality of life.