It’s one of the most common diseases in our country. It represents 70% in patients. It has many dangers all over the body as it lowers the body immunity so it makes the body susceptible to autoimmune diseases. Blood glucose level in normal person is 80/120 per ml. pancreas secretes insulin hormone which gets rid of extra glucose in blood. If amount of sugar exceeds its normal level, pancreas couldn’t secrete sufficient insulin and glucose accumulates in blood and its level increases in blood that is called diabetes. Diabetes has two main types: The first one is insulin dependent in which cells of pancreas couldn’t secrete insulin and it is more in children. Genetic factors play an important role in it as most of patient of this type has their grandfathers with the disease. The second type is insulin independent in which cells of pancreas couldn’t secrete more insulin to overcome the extra amount of the glucose in the blood. It is more in old ages and it isn’t genetic. Diabetic patient may shows many signs: excessive sweating, pallor, coolness, thirst , weakness , malaise , dizziness and nausea. If not treated, it causes many contraindications as cataract and diabetic retinopathy , renal failure and peripheral neuropathy. There are many approaches to control diabetes and overcome its spread.