There are two main types of diabetes. These are:
Type 1 diabetes
Type 2 diabetes
Type 1 diabetes develops if the body is unable to produce any insulin. This type of diabetes usually appears before the age of 40. Type 1 diabetes is the least common of the two main types and accounts for between 5 and 15 per cent of all people with diabetes. You cannot prevent Type 1 diabetes.
Type 2 diabetes develops when the body can still make some insulin, but not enough, or when the insulin that is produced does not work properly (known as insulin resistance). In most cases this is linked with being overweight. This type of diabetes usually appears in people over the age of 40, although in South Asian and African-Caribbean people it often appears after the age of 25. However, recently, more children are being diagnosed with the condition, some as young as seven. Type 2 diabetes is the most common of the two types and accounts for between 85 and 95 per cent of all people with diabetes.