The universal symbol for diabetes is a blue circle, according to the International Diabetes Federation. The circle is unifying as it symbolizes life health across many cultures, and the blue color is symbolic of the sky. The blue circle also represents the World Diabetes Day, an official United Nations day.
Diabetes is a chronic illness where the pancreas has trouble with either producing or effectively using the hormone insulin, explains the International Diabetes Federation. Since the body needs insulin to transform glucose into energy, problems with insulin's production or use may lead to hyperglycemia, tissue damage and organ failure. The three types of diabetes are Type 1, or juvenile-onset diabetes; Type 2, or non-insulin dependent diabetes; and gestational diabetes.