What is a common cause of type 1 diabetes?

Type 1 diabetes is primarily characterized by the autoimmune destruction of the beta cells in the pancreas, which are responsible for producing insulin. When these cells are destroyed, the body is unable to produce sufficient insulin, leading to high blood glucose levels. This type of diabetes is typically diagnosed in children and young adults, which is why it was previously known as juvenile diabetes.

The other options do not relate to the primary cause of type 1 diabetes. Obesity is more commonly associated with type 2 diabetes, where insulin resistance develops. Hormonal changes during pregnancy can affect glucose metabolism and may lead to gestational diabetes, but they do not directly cause type 1 diabetes. Insulin resistance primarily pertains to type 2 diabetes, where the body can initially produce insulin but cannot use it effectively. Thus, the destruction of the pancreatic beta cells is the fundamental cause of type 1 diabetes, making this answer accurate.