Root causes:-

1. Tension.
2. Pancreas is not functioning properly and so enough insulin is not produced to digest the sugar. At that time, if the blood is tested, 2~3 % or more sugar will be found in urine. 
3. When due to any reason, enough glucose is not extracted from the blood to go into cerebro spinal fluid, the content of glucose in the blood increases.
4. A metabolic disorder is the body where the ability to utilize carbohydrates is effected with long term diabetes, the eye, kidney and blood vessels my be effected. 

For correcting of this problem:-
It is necessary to give Acupressure treatment on all the endocrine glands and specially treatment on Pancreas glands, the Pancreas will be activated.