Diabetes is a metabolic disease which is characterised by high blood sugar levels. It can be caused either due to the lack of insulin (type 1 diabetes) or because the body’s cells fail to respond to the insulin produced (type 2 diabetes). Some of the common symptoms of diabetes are hunger, frequent urination and increased thirst. While type 1 diabetes is usually genetic, type 2 diabetes is caused more by lifestyle factors. It is one of the common ‘lifestyle diseases’ which is plaguing people in the developed countries and often has a causal link to heart diseases, hypertension and obesity.