This type of diabetes occurs when the immune system mistakenly attacks and destroys the insulin-producing cells in the pancreas. The exact cause is unknown, but it is believed to involve genetic and environmental factors. Type 1 diabetes typically develops in childhood or adolescence.
Type 2 diabetes is primarily caused by insulin resistance, where the body’s cells become less responsive to insulin. It often develops in adults, especially those who are overweight or have a sedentary lifestyle. Genetic factors and unhealthy habits, such as poor diet and lack of physical activity, contribute to its development.