Insulin therapy is a treatment method for individuals who have type 1 or type 2 diabetes. Insulin is a hormone that helps regulate blood sugar levels in the body. People with diabetes may not produce enough insulin or may not be able to effectively use the insulin their bodies produce, leading to high blood sugar levels. Insulin therapy involves the regular administration of insulin through injections or an insulin pump to help regulate blood sugar and prevent complications of diabetes. The goal of insulin therapy is to mimic the natural insulin production of a non-diabetic individual and maintain blood sugar levels within a healthy range. There are different types of insulin available, including rapid-acting, short-acting, intermediate-acting, and long-acting insulin, which can be used alone or in combination to provide personalized treatment for individuals with diabetes. Insulin therapy is typically combined with monitoring blood sugar levels, following a healthy diet, and regular exercise to effectively manage diabetes and improve quality of life.