The American Diabetes Association recommendations for most nonpregnant adults is a blood sugar between 80–130 mg/dL or 4.4-7.2 mmol/L before meals and a peak blood sugar after 1-2 hours after eating of <180 mg/dL or <10.0 mmol/L.
The closer blood sugars are to non-diabetic levels, the less risk there is of long-term complications of diabetes; however, under no circumstance are low blood sugars (<80 mg/dL or <4.4 mmol/L) advisable.
Blood sugar goals should be individualized based on a number of factors, including: the duration of diabetes, age/life expectancy, comorbid conditions, known cardiovascular disease or advanced microvascular complications, hypoglycemia unawareness, and other individual patient considerations.
Each person with type 1 diabetes should have their own blood sugar management goals.