Diabetes is a lifelong condition that causes a person’s blood sugar level to become too high.
There are two main types of diabetes:
- type 1 diabetes – where the body’s immune system attacks and destroys the cells that produce insulin
- type 2 diabetes – where the body doesn’t produce enough insulin, or the body’s cells don’t react to insulin
Type 2 diabetes is far more common than type 1. In the UK, around 90% of all adults with diabetes have type 2.