urination

Exert from Diabetes for Dummies
"Your glucose starts to rise in your blood when your body doesn't produce enough insulin or when the body is not working effectively. Once your glucose rises above 10.0 mmo/l glucose begins to seep into your urine and make it sweet. Up to that point, your kidney - the filter for your blood - is able to extract glucose before it enters your urine. Losing glucose into the urine leads to many of the short term complications of diabetes.

Frequent urination and thirst: The glucose in your urine draws more water out of your blood, so more urine forms. More urine in your bladder makes you feel the need to urinate more frequently during the day and to get up at night to empty the bladder, which keeps filling up. As the amount of water in your blood declines, you feel thirsty and dring much more frequently."

Hope this helps
Regards Val