Diabetes is when you have too much glucose in your blood. Insulin regulates the amount of glucose in the blood, and people with Type 1 – often diagnosed in childhood – can't make any insulin.

Those with type 2 diabetes, meanwhile, which is typically diagnosed in over-30s, can't make enough insulin or it doesn't work very effectively.

If you have diabetes, you are at risk of complications such as heart disease, stroke, kidney damage, nerve damage, depression, Alzheimer's disease, autoimmune disease and eye problems including the potential loss of vision or blindness.

Catching diabetes early and effective management of it is crucial if you want to radically reduce your chances of complications. Outside of conventional care, you can achieve a lot by taking regular exercise and following a diabetes diet plan.