T1, or Type 1 diabetes, is a chronic condition where the pancreas produces little to no insulin, a hormone essential for regulating blood sugar levels. This occurs when the body's immune system mistakenly attacks and destroys the insulin-producing beta cells in the pancreas. People with T1 require lifelong management, including regular blood sugar monitoring and insulin therapy. The exact cause of T1 is not fully understood, but it is believed to involve genetic and environmental factors. Symptoms often include increased thirst, frequent urination, and fatigue. Early diagnosis and treatment are crucial to prevent complications associated with high blood sugar levels.