Borderline diabetes, also known as prediabetes, is when a person is at risk for diabetes, explains WebMD. The blood sugar level for borderline diabetes is higher than acceptable levels, but is not yet in diabetes range. Borderline diabetes puts a person at a higher risk of stroke and heart disease.
Borderline diabetes is first determined by a fasting plasma glucose test, states WebMD. The blood sugar level in the borderline diabetes range for this test is 100 to 125. An oral glucose tolerance test is taken after a fasting glucose test to establish borderline diabetes. A solution with sugar is taken two hours before a blood test, and the blood sugar level for borderline diabetes is 140-199 after the second test. The hemoglobin AIC test finds the average blood sugar levels over several months, and a 5.7 to 6.4 percentage signifies borderline diabetes.
Lifestyles changes can prevent borderline diabetes from becoming diabetes, according to WebMD. Obesity increases the risk of borderline diabetes turning into diabetes, so weight loss is recommended. Moderate aerobic exercises such as brisk walking, cycling and swimming for 30 minutes a day also helps prevents diabetes. Low amounts of sugar, carbohydrates and moderate serving sizes can prevent diabetes, and meals high in whole grains, low-fat protein and vegetables help control borderline diabetes.