If you were on the fast-track to developing a serious illness you'd know it, right? Maybe not. Over 2 million people in Australia are prediabetic, yet many of them have no idea.
“Prediabetes is when your blood sugar is above normal but not in the range that would be considered diabetes,” says endocrinologist Dr Elizabeth Halprin. A normal blood sugar reading is 4-6mmol/L. If your fasting blood sugar lands somewhere between those numbers, you’ve qualified for prediabetes.
As you might have guessed from the name, unchecked prediabetes often turns into full-blown diabetes. But it can be hard to tell if you have this borderline condition, because it doesn't usually cause any symptoms. “There is no way to know you have prediabetes without a doctor diagnosing it with a blood test,” says Dr Christine Lee.
However, there are certain patterns and changes that can serve to tip you off. Watch out for these sneaky signs, which could signal that you're headed for prediabetes—or that you already have it.
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You’re packing extra kilos.
Carrying around excess fat, especially in your middle, raises the chance you’ll become resistant to insulin, which is a major risk factor for developing diabetes. “Being overweight puts stress on your pancreas to produce enough insulin and it makes it harder for the insulin you produce to do its job,” says Halprin. When your belly is the main site of your weight gain, it means you have fat around your organs, which can also nudge you closer to the diabetes danger zone.
One smart way to trim belly fat: Eat more vegetables. “You can use the ‘plate’ method, where half your plate is filled with vegetables, a fourth is protein, and a fourth is a whole-grain starch,” says Halprin.
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Your skin’s acting strange.
Prediabetes is usually symptom-less, but in some people it may show itself through milder versions of symptoms that are associated with diabetes, like feeling thirsty or needing to pee more often. Another red flag is skin changes, like discolouration or skin tags.
“Some people with prediabetes may have signs of insulin resistance like darkened skin in the armpit or on the back and sides of the neck, or many small skin growths in these same areas,” says Lee. Keep a close watch on any skin symptoms and bring your concerns to your doctor.
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You indulge your sweet tooth.
Sweet treats may taste good, but overdoing them puts you at risk for prediabetes. While limiting candy is a start, refined carbohydrates such as bread, rice, pasta and potatoes can mess with your weight and sugar levels, too, says Halprin. Limit simple carbs and sweets and make complex carbs (like whole grains), proteins, and veggies your staples.
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You’re rarely in motion.
Regular physical activity helps your body use insulin more efficiently, says Halprin. It can also help you maintain a healthy weight, which, in turn, decreases your risk of prediabetes and diabetes. If you’re used to a sedentary lifestyle, start small with a 10-minute walk three times a day. Once you’ve found your groove (and after checking in with your doctor), kick things up a notch until you’re a regular mover and shaker. Ideally, you should aim to log at least 150 minutes of moderate activity per week.
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You’ve blown out lots of birthday candles.
You can't stop time, but getting older puts you at risk for lots of things, including prediabetes. That's why its recommended doctors test all adults over 45 for prediabetes. See your doctor regularly to ensure that you’ve got a good handle on your blood sugar.Photograph by Getty Images
You've had blood sugar problems in the past.
Women who are diagnosed with gestational diabetes during pregnancy don't exactly go back to "normal" after their babies are born. Even if your blood sugar level is OK at your postpartum checkup, you still have an increased risk of prediabetes and diabetes later in life. Ditto if you had a baby who weighed over 4.5kgs at birth.
Your family history and ethnicity matter, too. If diabetes is in your family tree—especially if you’re African, Asian, Hispanic/Latino or Pacific Islander—you’re more likely to end up with prediabetes.
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You toss and turn at night.
When you don’t get good shut-eye, your body can get out of whack fast. Bad sleep can make you gain weight, which raises your prediabetes risk. Sleep disorders, like obstructive sleep apnea, can wreak havoc on blood sugar, too, says Lee.
Talk to your doctor if you’re struggling with snoozing. Treating your sleep problems might help keep you out of the diabetes danger zone.
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