Is type 2 diabetes hereditary?

Patient's question:

I was recently diagnosed with diabetes after a thorough check-up. I come from a family with a history of diabetes; both my aunt and father have it. I would like to ask about the role of intergenerational inheritance factors in diabetes.

Doctor's answer:

Type 2 diabetes usually occurs in middle-aged and elderly people, while the four types often appear in childhood and are definitely inherited across generations. In fact, whether it's first-degree or third-degree relatives, it is basically closely related to intergenerational inheritance. Especially for second-degree relatives, type 1 diabetes is usually caused by transmission, while type 2 diabetes is inherited across generations. Therefore, the factor of intergenerational inheritance is very important in type 2 diabetes. Hence, it is advisable to consult a doctor before pregnancy to minimize the risk.

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