I have diabetes, how do I lower high blood glucose before a meal?


High blood glucose before a meal tells you that your liver is making too much glucose and needs to be told to slow down! The signal it needs is insulin. Because it takes time for insulin to be absorbed from the skin and additional time to reduce the liver's glucose production, we suggest that you take your usual dose of insulin and wait 60–90 minutes (instead of the usual 30–45 minutes) to eat. This will allow your blood glucose level to fall toward the normal range before you eat, giving the insulin a "head start." The goal is not to become low before eating but to regain control over high blood glucose. An alternative is to take lispro insulin 15–30 minutes before your meal, which should lower your blood glucose more rapidly than regular insulin.

Continue Learning about Diabetes


Diabetes mellitus (MEL-ih-tus), often referred to as diabetes, is characterized by high blood glucose (sugar) levels that result from the body’s inability to produce enough insulin and/or effectively utilize the insulin. Diabetes ...

is a serious, life-long condition and the sixth leading cause of death in the United States. Diabetes is a disorder of metabolism (the body's way of digesting food and converting it into energy). There are three forms of diabetes. Type 1 diabetes is an autoimmune disease that accounts for five- to 10-percent of all diagnosed cases of diabetes. Type 2 diabetes may account for 90- to 95-percent of all diagnosed cases. The third type of diabetes occurs in pregnancy and is referred to as gestational diabetes. Left untreated, gestational diabetes can cause health issues for pregnant women and their babies. People with diabetes can take preventive steps to control this disease and decrease the risk of further complications.

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.