What type of diabetes usually develops after age 40 and shows a hereditary pattern?

Type 2 diabetes typically develops after the age of 40 and is often associated with a hereditary predisposition. It is characterized by insulin resistance, where the body does not use insulin effectively, leading to elevated blood glucose levels. The genetic component plays a significant role in the likelihood of developing this type of diabetes, as individuals with a family history are at an increased risk.

Type 1 diabetes, in contrast, generally manifests in childhood or adolescence and is primarily an autoimmune condition where the body destroys insulin-producing cells in the pancreas. Gestational diabetes occurs during pregnancy and usually resolves after childbirth. LADA, while it can develop in adults and may share features of both Type 1 and Type 2, is typically diagnosed later than Type 2 diabetes and involves a slower progression of insulin deficiency. Therefore, Type 2 diabetes aligns with the characteristics specified in the question, making it the correct choice.