This movie-night favorite can fit into a blood sugar–friendly diet, depending on how you prepare and enjoy it.

Reviewed by Dietitian Casey Wing, RD, CD

Key Points

• Air-popped popcorn is a low-calorie, fiber-rich snack that can support blood sugar management.


• Pair popcorn with protein or healthy fats to slow digestion and prevent blood sugar spikes.


• Avoid sugary or buttery toppings; opt for spices or heart-healthy oils for added flavor and benefits.

Whether you are watching a movie in the theater or cheering on your favorite team at the stadium, popcorn is likely your go-to snack. There’s a lot to love about this fluffy whole grain with its satisfying crunch and endless flavor variations from salty to sweet. If you’re a popcorn-lover, you may be wondering if you can still enjoy this crunchy snack while trying to keep your blood sugar levels in check.

The short answer: yes. “Plain, popped popcorn is a low-moderate glycemic grain that offers fiber and protein and provides a gradual blood sugar rise, especially when it is limited to 3 cups,” says Sheri Gaw, RDN, CDCES. Read on to find out how popcorn impacts your blood sugar and for expert tips on how to incorporate this popular snack into your diet.

How Popcorn Affects Blood Sugar

It Can Raise Your Blood Sugar

“Popcorn can raise blood sugar temporarily because it contains carbohydrates, much like other whole grains,” says Deepa Deshmukh, M.P.H., RDN, CDCES, BC-ADM. However, don’t let that deter you from enjoying a bowl of popcorn as a snack—you still need carbs even when you are trying to keep your blood sugar levels in check. In fact, choosing popcorn as one of your carbs is a smart move. “About 3 cups provides roughly 15 grams of carbohydrate, making it a satisfying, portion-friendly snack, especially when paired with protein or healthy fat to slow digestion and prevent spikes,” says Ginger Cochran, M.S., RDN, CDCES, EP.

It Can Also Help Stabilize Blood Sugar

Fiber is particularly helpful for blood sugar management because it helps slow carbohydrate digestion for a more gradual rise in your blood sugar. Unlike other salty snacks like potato chips, reaching for popcorn can help you get more of that blood sugar–friendly fiber. A 3½-cup serving (1 ounce) of air-popped popcorn provides an impressive 4 grams of fiber for just 110 calories.

It May Help Lower Long-Term Diabetes Risk

Popcorn is likely not top of mind when listing foods that are rich in antioxidants, but it’s true—this whole grain is surprisingly rich in polyphenols, which are compounds that act like antioxidants in the body. Some popcorn varieties like purple popcorn may offer even more of these beneficial plant compounds, says Deshmukh. Research suggests that individuals who regularly consume foods rich in antioxidants have better blood sugar control and a lower risk of complications like heart disease.

Added Ingredients Can Lead to Quicker Rises

There are endless ways to enjoy popcorn, and not all of them will have the same impact on your blood sugar. “Versions loaded with butter, saturated fats or added sugars, like movie theater popcorn or caramel corn, can lead to quicker blood sugar rises and aren’t ideal for everyday intake,” says Cochran. Those toppings also tack on calories to an otherwise low-calorie snack. The best option is air-popped popcorn without oil and fatty or sugary toppings, per Deshmukh.

Popcorn Nutrition Information

Ready to start snacking? Air-popped popcorn can be a great healthy snack choice that is low-calorie, low-fat and gluten-free. A serving provides just over 100 calories with a variety of nutrients. Here’s a quick review of the nutrition information for a 1-ounce serving (about 3½ cups) of air-popped popcorn.

• Calories: 110


• Carbohydrates: 22 g


• Dietary fiber: 4 g


• Total sugar: 0 g


• Added sugar: 0 g


• Protein: 4 g


• Total fat: 1 g


• Saturated fat: 0 g


• Cholesterol: 0 mg


• Sodium: 2 mg


• Magnesium: 40 mg


• Folate: 9 mcg


• Iron: 1 mg

Is Popcorn Safe for Everyone?

As long as you don’t have a corn allergy, popcorn is considered a safe snack for most people. Individuals with diverticulosis, a condition in which small, bulging pouches develop inside the intestines, were often told to avoid popcorn in case it could get stuck in one of those pouches and cause inflammation. However, research studies have debunked this once-popular advice. Individuals should consult their primary health care providers to determine the best route for their circumstances.

Popcorn is considered to be a potential choking hazard, so children under 4 years of age should avoid popcorn. Anyone with dental issues should also consider avoiding popcorn, as the hard, crunchy kernels can chip teeth or damage dental work.

3 Ways to Enjoy Popcorn for Healthy Blood Sugar Levels

Next time you are craving popcorn, here are some tips for eating it in a way that supports blood sugar management.

• Give it a protein buddy. Pairing your popcorn snack with protein, like nuts, is another simple way to make it more blood sugar–stable, says Cochran.


• Choose healthy seasonings. Butter and caramel aren’t the only ways to add flavor to your popcorn. Consider popping it in a healthy fat like olive oil and seasoning it with nutritional yeast, cinnamon, paprika, garlic powder and more. Not only do they add flavor, but many spices and herbs provide anti-inflammatory benefits, too. Next time you’re popping a serving of popcorn, try adding cinnamon or a tangy combo of lime and Parmesan.


• Practice portion control. While the serving size for popcorn is large compared to a serving of potato chips, it can be easy to overeat if you’re snacking while distracted by a movie or ball game. Rather than eating straight from the bag, add just one portion to a bowl for snacking. Pairing your popcorn with protein can also curb eating too much, since it makes for an even more satisfying snack.

Our Expert Take

Movie nights are even more fun with a big bowl of popcorn. Whether salty, sweet or somewhere in between, popcorn is a well-loved crunchy snack. Although buttered movie theater popcorn may have given this whole grain a bad reputation, air-popped or homemade popcorn made with a heart-healthy oil can be a good-for-you snack—even for those watching their blood sugar. Since popcorn contains carbs, it will raise your blood sugar, but experts say that’s no reason to give it up. Popcorn also contains plenty of blood sugar–friendly fiber to help keep your blood sugar stable and provides antioxidants that may offer long-term blood sugar benefits.