In type I diabetes, the pancreas stops secreting insulin. In type II diabetes, the pancreas secretes insulin but the body is resistant to the insulin. To compensate for the insulin resistance, the pancreas secretes more and more insulin, but eventually fails to compensate sufficiently and blood glucose levels gradually rise. Diabetes is defined as having either a fasting glucose of more than 7 mmol/L or blood glucose of at least 11.0 mmol/L 2 hours after a meal. Diabetes is a very strong risk factor for heart disease and stroke.