DIABETES occurs because glucose stays in the blood and is not converted by insulin as fuel for energy.
The body tries to reduce blood glucose levels by flushing the excess out in the urine.
Symptoms include: extreme tiredness, going to the toilet all the time, weight loss, slow healing and blurred vision.
Type 1 diabetes is when no insulin is produced at all because cells in the pancreas have been destroyed. It is nearly always treated with insulin injections.
Type 2 diabetes develops more slowly and can be lifestyle related. It can be treated with diet or medication.