Can You Eat Sweet Potatoes If You Have Diabetes? Here's What Dietitians Say (2024)

Sweet potatoes often have a healthier reputation than regular potatoes, but they still contain carbohydrates. If you have diabetes or want to prevent diabetes, you might be wondering whether or not even healthy carbs are OK for you to eat. Considering that nearly 1 in 3 U.S. adults have prediabetes, per the Centers for Disease Control and Prevention, you may want to learn more about how to include foods like sweet potatoes in your diet.

Whether you’re eating it roasted, in soups or baked on their own, this starchy root vegetable offers vibrant nutrition to add to your plate. Packed with nutrients, high in fiber and loaded with antioxidants, we love the nutritious benefits of this starchy veggie. It’s true that sweet potatoes contain carbohydrates, so if you have diabetes, you might be interested in understanding how to incorporate them into your diet.

We spoke to dietitians and diabetes educators to learn exactly how sweet potatoes impact blood sugar levels and how to incorporate them into a healthy, balanced diet.

Pictured recipe: Maple-Roasted Sweet Potatoes

Sweet Potato Nutrition

From Japanese sweet potatoes to North Carolina Orange varieties, there are dozens of varieties of sweet potatoes (not to be confused with yams!). Sweet potatoes are rich in vitamins A, B6 and C, potassium and fiber, sharesMary Ellen Phipps, M.P.H., RDN, LD, author of The Easy Diabetes Cookbook.

“Orange sweet potatoes contain more beta carotene, while purple sweet potatoes contain more anthocyanins. Both beta carotene and anthocyanins are health-promoting antioxidants,” Phipps comments. One medium sweet potato contains a moderate amount of starchy carbohydrates, is a good source of fiber and has an impressive vitamin and mineral profile.

According to the USDA, one cooked medium sweet potato (114 grams or about 4 ounces) with skin contains the following nutrition:

  • Calories: 103
  • Carbohydrates: 24 g
  • Total sugars: 7 g
  • Fiber: 4 g
  • Protein: 2 g
  • Fat: 0 g
  • Sodium: 41 mg
  • Potassium: 542 mg
  • Vitamin C: 22 mg
  • Vitamin A: 1,100 mcg RAE

Megan Huff, RD, LD, an Atlanta-based cardiac ICU dietitian, recommends boiling sweet potatoes instead of baking them, as boiling will result in less breakdown of starch, according to a 2022 study published in Food Chemistry. “To make a balanced meal, eat sweet potatoes with a protein and fat to further slow the digestion and absorption of sugars,” she adds.

How Do Sweet Potatoes Impact Blood Sugar?

Just like all foods that contain carbohydrates, sweet potatoes can raise blood sugar levels, Phipps tells us. How much your blood sugar levels rise is based on your total serving size, how you cook your sweet potatoes, and what you pair with them.

Experts agree that we shouldn’t cut out sweet potatoes simply because they contain carbohydrates, though. The CDC notes that no one size fits all, and how many carbs you should eat depends on your individual needs. Working with a dietitian or diabetes educator can help determine the right amount for you.

“Like many other starchy foods, sweet potatoes are naturally higher in carbohydrates and lower in protein and fat. This means that sweet potatoes are more likely to cause blood sugar spikes if eaten alone. However, if you pair them with other foods that contain fat and protein, this can make all the difference in the impact it has on your blood sugar,” says Carla Hernandez, nutrition and clinical program lead at Twin Health.

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Can People with Diabetes Eat Sweet Potatoes?

You can still eat sweet potatoes if you have diabetes, assures Huff. The fiber content in sweet potatoes, especially if you consume them with the skin on, can help reduce spikes in your blood sugar. Plus, how you cook your sweet potatoes can also help reduce the extent to which your blood sugar rises. For example, Phipps advises that boiled sweet potatoes have a lower glycemic index than those that are roasted or baked. The glycemic scale measures how quickly food can make your blood sugar rise. Thus, lower-glycemic foods tend to have a lesser impact on blood sugars.

Can People with Diabetes Eat Fruits?

Tips for Eating Sweet Potatoes in a Diabetes-Friendly Eating Plan

Phipps recommends pairing sweet potatoes with your favorite nonstarchy vegetables and protein sources. These foods take longer to digest, thus creating a “slow drip” of energy into your bloodstream and a slow, steady change in blood sugar.

Particular foods that would be great to pair sweet potatoes with include cheese, any type of protein such as chicken, seafood or steak and, of course, the more fiber, the better, recommends Hernandez. “Preferably, fiber should be coming from nonstarchy vegetables, such as broccoli, leafy greens, Brussels sprouts or green beans. As a bonus, adding fat to foods that contain large amounts of carotenoids increases its bioavailability as well as its conversion to the active form of vitamin A, which is a fat-soluble vitamin,” she adds. Some diabetes-friendly sweet potato recipes you can try are a No-Sugar-Added Sweet Potato Casserole, Anthony Anderson’s Sweet Potato Home Fries with Cranberry-Hazelnut Crumble or some simple yet delicious Roasted Sweet Potatoes.

The Bottom Line

Boiling sweet potatoes or pairing them with foods high in protein and fiber can help folks with diabetes better manage potential blood sugar spikes after eating. Although in moderation, any food can be part of a healthy, diabetes-friendly diet. Sweet potatoes are packed with nutrition and offer a high-fiber carbohydrate to any meal, which is important for a balanced plate whether you have diabetes or not.

Can You Eat Sweet Potatoes If You Have Diabetes? Here's What Dietitians Say (2024)

FAQs

Can You Eat Sweet Potatoes If You Have Diabetes? Here's What Dietitians Say? ›

Although in moderation, any food can be part of a healthy, diabetes-friendly diet. Sweet potatoes are packed with nutrition and offer a high-fiber carbohydrate to any meal, which is important for a balanced plate whether you have diabetes or not.

What can I eat with potatoes to not spike my blood sugar? ›

Eating potatoes alongside low-GI foods that provide fiber, lean protein, and healthful fats can help balance the nutritional benefits of a meal. Eating high-fiber foods can help a person moderate blood sugar levels and increase their feeling of fullness after a meal.

Is peanut butter good for diabetics? ›

Is peanut butter good for people with diabetes? In moderation, eating regular peanut butter (not low-fat) should be fine for people with diabetes. Low-fat peanut butter should be reduced or avoided. This is because the fat content of low-fat peanut butter can be replaced with sugar and result in more carbohydrates.

Is the sugar in sweet potatoes bad for you? ›

Sugar Content

As with all things, excess is bad, and this applies also to your sugar intake. While eating 3.5 ounces of sweet potatoes likely will have a negligible impact on your health, if you eat additional helpings of sweet potatoes, the sugar count can quickly add up.

Can diabetics eat bananas? ›

A person with diabetes should include a variety of fresh, whole foods in their diet, such as nutrient-dense fruits and vegetables. Bananas are a safe and nutritious fruit for people with diabetes to eat in moderation as part of a balanced, individualized eating plan.

Are sweet potatoes OK for blood sugar? ›

Sweet potatoes are known to be high in fiber and have a low glycemic index, which results in a less immediate impact on blood glucose levels. This can help people with diabetes keep their blood sugar levels in check. Sweet potatoes can be: Baked or microwaved.

Which is worse for diabetics, potatoes or rice? ›

Some evidence-based guidelines recommend consuming low glycemic index foods (whole grain bread, legumes, and basmati rice) in place of high glycemic foods (such as potatoes and watermelon) to manage glycemic control.

What is the number one snack to lower blood sugar? ›

But there is one food that stands alone as the best snack for lower blood sugar: nuts. Nuts are delicious, nutritious and incredibly versatile as far as snack foods go. Plus, they can be stored at room temperature (or in the freezer for longer periods) and are great for grab-and-go snacks.

Which nuts should diabetics avoid? ›

Avoid nuts that are coated in salt — Dobbins notes that sodium is bad for your blood pressure — and sugar. More bad news if you love the sweet-and-savory combo: Chocolate-covered peanuts and honey-roasted cashews are high in carbs and not the best choice when you have diabetes, Dobbins says.

What is the peanut trick to lower blood sugar? ›

Peanuts and peanut butter have even been shown to help lessen the spike in blood sugar when paired with high-carbohydrate or high-GL foods. Peanuts and peanut butter are both low GI and GL foods, as they contain healthy oils, protein, and fiber that have a positive effect on blood sugar control.

When not to eat sweet potatoes? ›

How to tell if sweet potatoes have gone bad. If your sweet potato is soft in spots, smells rotten, or oozes a mysterious liquid, that potato should be discarded. Another sign that sweet potatoes have taken a turn for the worse is if they start growing stalky purplish sprouts.

What happens when you eat too much sweet potatoes? ›

Sweet potatoes are rich in oxalate content and can result in the formation of kidney stones. Consuming sweet potatoes in excess can result in sweet potato side effects such as Vitamin A toxicity, which is manifested in skin rashes and headaches.

What is the healthiest sweet potato? ›

Sweet potatoes with orange flesh are richest in beta-carotene. Sweet potatoes with purple flesh are richer in anthocyanins. Beta-carotene and anthocyanins are naturally occurring plant “phyto” chemicals that give vegetables their bright colors.

What is the number one fruit for diabetes? ›

1. Berries. Berries, such as blueberries, raspberries, and blackberries, are among the most nutritious fruits you can eat. Not only are they rich in fiber, vitamins, minerals, antioxidants and compounds with anti-inflammatory effects, but research has also linked berry consumption with improved glycemic control.

What drink lowers blood sugar? ›

Drinking water is an excellent way to stay hydrated without consuming sugar. Green tea, cow's milk, and fermented milk (kefir) could also help you manage your blood sugar responses. Coffee also contains compounds that may help regulate blood sugar, but confirming this requires more research.

Is a banana a day too much sugar? ›

True or False: Bananas have too much sugar- False!

An average medium sized banana contains about 14 grams of sugar, which is about 53% of its total 105 calories. When you see that a banana is half sugar, it's easy to understand why some might think they need to steer clear of them.

How to lower the glycemic index of potatoes? ›

In general, the longer a potato is cooked the higher the GI. Therefore, boiling or baking for long periods tends to increase the GI. Yet, cooling potatoes after cooking can increases the amount of resistant starch, which is a less digestible form of carbs. This helps lower the GI by 25–28% ( 21 , 22).

How to prepare potatoes for diabetics? ›

Potatoes can be baked, mashed, roasted, sautéed, scalloped, hashed, and so much more. By portioning potatoes and pairing them with a protein and non-starchy vegetables, they can be a healthy and delicious part of any meal!

Do all potatoes spike blood sugar? ›

They're also chock full of starch, which is a carbohydrate. But even though a potato is considered a complex “healthy” carb, your body digests these carbs faster than other kinds of complex carbs. These broken-down carbs flood your blood with sugar. This makes your blood sugar spike quickly.

What is a good potato substitute for diabetics? ›

If you do not want to use up your carb choices from potatoes or rice and are looking for low carb choices you can try mashed cauliflower with low fat tub margarine or spray butter. One half cup serving of cooked cauliflower is only 5 grams of carbohydrate.

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