How to tell if you have prediabetes
Dear Savvy Senior,
My 62-year-old sister was recently diagnosed with type 2 diabetes and was surprised when the doctor told her that she’s probably had it or prediabetes for many years. My question is what determines prediabetes and how can you know if you have it?
Underlying today’s growing epidemic of type 2 diabetes is a much larger epidemic called prediabetes, which is when the blood sugar levels are higher than normal but not high enough to be called diabetes.
The National Institutes of Health estimates that as many as 79 million Americans today have prediabetes. Left untreated, it almost always turns into type 2 diabetes within 10 years. And, if you have prediabetes, the long-term damage it can cause -- especially to your heart and circulatory system -- may already be starting.
But the good news is that prediabetes doesn’t mean that you’re destined for full-blown diabetes. Prediabetes can actually be reversed, and diabetes prevented, by making some simple lifestyle changes like losing weight, exercising, eating a healthy diet, and cutting back on carbohydrates. Or, if you need more help, oral medications may also be an option.
Because prediabetes typically causes no outward symptoms, most people that have it don’t realize it. The only way to know for sure is to get a blood test.
Everyone age 45 years or older should consider getting tested for prediabetes, especially if you are overweight with a body mass index (BMI) above 25. See cdc.gov/bmi to calculate your BMI.
If you are younger than 45 but are overweight, or have high blood pressure, a family history of diabetes, or belong to an ethnic group (Latino, Asian, African, or Native American) at high risk for diabetes, you too should get checked.
To help you determine your risk of diabetes, the American Diabetes Association has a quick, online quiz you can take for free at diabetes.org/are-you-at-risk.
There are several tests your doctor can give you to determine whether you have prediabetes like the “fasting blood glucose test “or the “oral glucose tolerance test,” that each require an eight-hour fast before you take it. And the “hemoglobin A1C test,” that can be taken any time regardless of when you ate.
If you’re reluctant to visit your doctor to get tested, an alternative is to test yourself. To do that, you’ll need to purchase an A1C home test kit that measures your average blood glucose over the past two to three months.
The ReliOn A1c Test sold at Walmart (or walmart.com) for $9 is a popular option. With this test kit, you provide a small blood sample (about a drop), and send it to the lab in a postage-paid return mailer for analysis. The results are usually sent back within a week.
A1C tests measure the percentage of glucose in the bloodstream. A reading of 5.7 to 6.4 percent is considered prediabetes, while 6.5 percent or greater is diabetes.
If you find that you are prediabetic or diabetic, you need to see your doctor to develop a plan to get it under control.
For more information on prediabetes and diabetes, visit the American Diabetes Association at diabetes.org, and the National Diabetes Education Program (ndep.nih.gov), which also offers dozens of free publications you can order online or by calling 888-693-6337.
Jim Miller is a contributor to the NBC “Today” show and author of The Savvy Senior. Send your senior questions to: Savvy Senior, P.O. Box 5443, Norman, OK 73070, or visit SavvySenior.org.
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