Type 1 and type 2 diabetes may have similar names, but they’re different diseases with unique causes.
The key differenceTrusted Source between type 1 and type 2 diabetes is that type 1 is believed to be caused by an autoimmune reaction and develops early in life. Type 2 diabetes develops over the course of many years and is related toTrusted Source lifestyle factors such as being inactive and carrying excess weight. It’s usually diagnosed in adults.
Risk factors for type 1 diabetes are not as clearTrusted Source, but family history may play a role.