You’ve probably heard of type 1 and type 2 diabetes. According to the Centers for Disease Control and Prevention (CDC), more than 34 million Americans have diabetes — but the actual number might be ...

Some people use the term “type 3 diabetes” to describe Alzheimer’s disease. However, official health organizations do not accept this term, and most doctors do not use it for diagnostic purposes.

Type 2 diabetes is the most common kind of diabetes. Lifestyle factors such as diet and exercise, genetics, and some medications can cause you to develop the condition. It’s sometimes called ...