Diabetes is a chronic disease characterized by the body's inability to regulate blood sugar (glucose) levels. It is marked by insufficient production of insulin or the body's resistance to insulin. The main types of diabetes are Type 1, Type 2, and gestational diabetes. Type 1 diabetes usually begins in young age and is associated with the body not producing insulin. Type 2 diabetes is more common in adults and occurs when the body can't use insulin effectively. Gestational diabetes develops during pregnancy. Symptoms of diabetes include frequent urination, excessive thirst, unexplained weight loss, extreme hunger, blurred vision, fatigue, and slow healing of wounds. Early diagnosis and proper management can help prevent serious health complications caused by diabetes.