Can Diet Help You Reverse Prediabetes?

Prediabetes is essentially a health warning stage. The diagnosis means your blood sugar is higher than it should be but not high enough to be classified as Type 2 diabetes, a chronic and often life-shortening disease.

It’s estimated that 38% of American adults have prediabetes and the health concerns that come with it. Globally, the rate is 6%.

Add it all together and you’re talking about nearly 300 million people at risk worldwide.

Now the good news: Prediabetes can be erased. Healthy lifestyle changes — including eating more nutritious foods — can reverse the diagnosis and bring blood sugar levels back into line.

To find out what should (and shouldn’t) be on your plate and how you can adjust your eating habits to move away from prediabetes, we turn to registered dietitian Julia Zumpano, RD, LD.

Blood sugar and prediabetes

Think about liquids that are high in sugar, like honey or maple syrup. They tend to be thicker and a tad sticky, right? That’s because sugar molecules bond with water molecules to increase the density of the solution.

That might be desirable when applying a sweet-tasting coating to a biscuit or pancake. It’s not ideal, though, when “syrupy” describes the blood flowing through your body, says Zumpano.

Blood that has too much glucose, a kind of simple sugar, tends to move more slowly through your arteries. That can eventually weaken and damage blood vessels and lead to heart issues, vision problems, kidney disease and nerve problems.

Now you do need some glucose in your blood, as it’s your body’s go-to source of energy. But when the average of your blood sugar levels (called a hemoglobin A1c) reaches between 5.7% to 6.4%, this qualifies as prediabetes and deserves attention.

Diet tips to manage prediabetes

Rethinking your diet to address prediabetes (and reduce your risk of developing diabetes) doesn’t have to mean giving up foods you love, says Zumpano. It may, however, mean eating them less often and in smaller amounts while adding in more nutritious alternatives.

Here’s a rundown of foods to limit or avoid, as well as items to best fill up your plate and belly without sending your blood sugar soaring.

Foods to limit with prediabetes

Cutting back or eliminating these items from your pantry can help keep your blood sugar levels down.

Treats with added sugars

Dropping your blood sugar starts with … well, dropping sugary items from your eating routine.

“Sugar is a quick-release carb, so your body quickly releases glucose into your bloodstream when you eat it,” explains Zumpano. “This causes a spike in your blood sugar level.”

The not-so-surprising list of foods often high in added sugar include:

• Candy and chocolate bars
• Desserts and sweets
• Baked goods
• Jams and jellies
• Natural sweeteners like agave and honey
• Various syrups

Sweetened drinks

Cutting out sugary beverages is one of the simplest — and, for some people, easiest — ways to lower your blood sugar. Consider these sweet sippers fuel that can make your blood sugar skyrocket.

• Energy drinks.
• Fruit juices.
• Lemonade.
• Punch.
• Sweet tea.
• Sweetened coffee drinks.
• Soda.

When you’re thirsty, water is your best bet, says Zumpano. If that’s too plain for you, infuse it with fruits or herbs to punch up the taste.

Other good substitutes include unsweetened tea (hot or iced) or sparkling water. If you need a caffeine boost, plain coffee is naturally free of sugar.

‘Bad’ carbs

While all carbohydrates raise your blood sugar levels, certain carbs tend to boost it in a jiffy — which isn’t ideal for regulating your system, says Zumpano. These sudden spikes are often followed by crashes, too.

Simple (or refined) carbs fuel this up-and-down ride given how easily they’re digested to send glucose into your bloodstream quickly. (Learn more about “good” and “bad” carbs.)

Examples of “bad” carbs include:

• White bread
• White pasta
• White rice
• Snack foods such as chips, crackers and pretzels

Alcohol

Alcoholic beverages are a form of carbohydrate. In general, of course, it’s best to consume alcohol in moderation or not at all — but it’s especially important if you’ve been diagnosed with prediabetes.

“If you’re going to drink, choose spirits with a no-calorie mixer or an option like light beer, seltzer or dry wine,” says Zumpano. “They contain the fewest carbs.”

Foods to better manage blood sugar

Lowering your blood sugar often can be done by adjusting what sort of carbs you eat and adding protein and fiber to your diet. Let’s break it down.

Find the ‘good’ carbs

Eating foods with “complex” carbohydrates can give your body the carbs it needs without that sugar dump brought by simple carbs, says Zumpano. That’s because fiber-rich complex carbs take longer to digest to slow glucose absorption.

Foods that fall in the complex carb category include:

• Whole-wheat or bean-based pasta
• Brown or wild rice
• Beans and lentils
• Barley
• Bulgur
• Buckwheat
• Farro
• Oats
• Quinoa
• Sweet potatoes or yams
• Redskin potatoes
• Winter squash

Eat healthy proteins

Protein slows the rate that which carbohydrates enter your bloodstream, which works to keep blood sugar levels steady, explains Zumpano. Plus, proteins can help you feel fuller and reduce the urge to snack.

Healthy proteins include:

• Eggs
• Fish and shellfish
• Greek yogurt
• Skinless poultry
• Lean cuts of red meat
• Nuts and seeds
• Part-skim cheese and cottage cheese
• Tofu
• Legumes such as dried beans, peas and lentils (These are technically carbs that provide protein, so if you use them as a protein source avoid or limit your consumption of other complex carbs.)

Veggies

Fiber slows down digestion and glucose absorption. Know what’s usually loaded with fiber? Vegetables. “Load up on vegetables, particularly non-starchy ones,” says Zumpano. “The fiber will help you feel full and satisfied.”

So fill your plate with veggies such as:

• Asparagus
• Artichokes
• Beets
• Brussels sprouts
• Broccoli
• Carrots
• Cauliflower
• Celery
• Cucumber
• Eggplant
• Leafy greens
• Mushrooms
• Onions
• Peppers
• Radishes
• Sprouts
• Tomatoes
• Yellow squash
• Zucchini

Lower-sugar fruit

Fruit is a nutrient-dense natural source of sugar best enjoyed in moderation. “Limit portion size to 1 cup or less at a time,” says Zumpano. (She also suggests leaning toward lower-sugar fruits, like berries and kiwi.)

Pairing fruit with a protein source can help slow the rate of glucose entering your bloodstream. Examples of proteins that go well with fruit include nuts and seeds (or natural nut butters); plain yogurt; cottage cheese; string cheese or a hard-boiled egg.

Is there a prediabetes diet?

There’s no single one-size-fits-all diet for prediabetes, though there are eating plans that offer a beneficial framework, says Zumpano. The Mediterranean diet is one example. Ditto for the ketogenic (keto) diet and intermittent fasting.

“What works for one person may not work as well for another,” says Zumpano. “It can be very personalized. Overall, the goal should be to establish healthier eating habits that work for your lifestyle, your taste and your preferences.”

Final thoughts

Making changes to lifelong eating habits to address prediabetes can be difficult, acknowledges Zumpano. But if you make the effort, know that you’re taking a positive step for your overall health that may help you live longer and improve your quality of life.

When it comes to preventing Type 2 diabetes (the step following prediabetes), studies show that lifestyle changes like eating better and exercising more may be more effective than medications.

Weight loss is a big part of that, too. Research shows that 5% to 7% weight loss when coupled with physical activity can reduce your risk for developing Type 2 diabetes by 58%. If you are over the age of 60, your risk goes down by 71%.

“Early intervention in prediabetes is the key to successful reversal,” says Zumpano, “and a healthy diet plays a huge role in that process.”