7 high-fiber, low-carb foods you can easily add to your diet

If it is your goal to decrease your carb intake, trying to keep your meals balanced can feel like a challenge. And you are probably also hearing a lot of nutrition advice about adding more fiber to your diet, which can feel confusing, since fiber is a carbohydrate.

The good news? Plenty of delicious, everyday foods deliver a solid dose of fiber without significantly increasing your carbohydrates. If you’re managing blood sugar or simply looking to feel fuller longer, adding high-fiber, low-carb foods to your plate can make a real difference.

Let’s find out some options that you can add today after learning about the benefits of fiber.

Benefits of fiber

Fiber is the unsung hero of digestive health. Unlike other carbohydrates, your body doesn’t break down fiber completely; instead, it passes through your digestive tract doing important work along the way. There are two types of fiber:

• Soluble fiber dissolves in water and forms a gel that slows digestion, helping keep blood sugar steady.
• Insoluble fiber adds bulk to your stool and keeps things moving, promoting regular bowel movements.

Your gut microbiome—the trillions of bacteria in your digestive tract—also relies on fiber. When gut bacteria ferment fiber, they produce short-chain fatty acids that help maintain your colon’s health and may reduce inflammation throughout your body.

Despite these benefits of fiber, most Americans fall short of the daily recommendations. The Dietary Guidelines of America 2020-2025 recommend 22 to 34 grams of fiber daily for teens or adults age 14 years and above, yet the average adult consumes only about 15 grams—roughly half of what’s recommended. For people following low-carb diets, getting enough fiber can be even more challenging since many traditional fiber sources are higher in carbohydrates.

The blood-sugar connection

For anyone watching their carb intake—whether managing diabetes, prediabetes or seeking more stable energy—fiber is your friend. Because your body can’t fully digest it, fiber moves through your system without triggering rapid glucose release. Even better, fiber slows the absorption of other nutrients, helping prevent the post-meal blood sugar roller coaster.

This is why many people calculate “net carbs”—which is the total carbohydrates minus fiber. Since fiber doesn’t impact blood sugar the same way, net carbs give a more accurate picture of how a food might affect your glucose levels.

7 easy-to-find high-fiber, low-carb foods

You don’t need to hunt down exotic superfoods or add expensive and trendy products to boost your fiber intake. These everyday options are probably already in your local grocery store.

1. Leafy greens

Spinach, kale and Swiss chard are fiber powerhouses with minimal additional carbs. They support digestive regularity while delivering vitamins and minerals. Toss them into smoothies, sauté them as a side, put them in a stir-fry or use them as a salad base.

2. Chia seeds

2 tablespoons: 11 grams of fiber with only 2 grams of net carbs, plus omega-3 fatty acids and protein

These tiny seeds pack a serious punch. When mixed with liquid, they form a gel—perfect for puddings or thickening smoothies. This gel-forming property also supports digestive health by helping food move smoothly through your GI tract.

3. Avocados

1 avocado: roughly 9 grams of fiber with only about 3 grams of net carbs

Creamy and satisfying, avocados are also rich in heart-healthy monounsaturated fats that help you feel full—excellent for managing your appetite while eating fewer carbs.

4. Flax seeds

2 tablespoons: about 4 grams of fiber with essentially zero net carbs

Ground flax seeds are also one of the best plant sources of omega-3 fatty acids. Sprinkle ground flaxseed on yogurt, blend it into smoothies or use it as a partial flour substitute in low-carb baking.

5. Cruciferous vegetables

Broccoli, cauliflower, brussels sprouts and cabbage are all excellent choices for fiber. Cauliflower has become especially popular as a low-carb substitute—rice it, mash it or use it as a pizza crust base. These veggies provide fiber along with vitamins C and K.

6. Berries

1 cup of raspberries: about 8 grams of fiber with only 7 grams of net carbs

For fruit, berries are your best bet, and raspberries and blackberries lead the pack. They’re also loaded with antioxidants. Enjoy fresh, frozen or as a topping for low-carb yogurt.

7. Almonds and other nuts

A handful of almonds (about 1 ounce): 4 grams of fiber with just 3 grams of net carbs, plus healthy fats and protein.

Pistachios and walnuts are also solid choices. They’re calorie-dense, so be mindful of portions, but they make an excellent filling snack.

4 simple ways to add more fiber to your day

Working these high-fiber, low-carb foods into your routine doesn’t have to be complicated.

1. Add chia seeds or ground flaxseed to breakfast.
2. Keep pre-washed leafy greens on hand.
3. Swap traditional sides for roasted cauliflower or sauté broccoli with some garlic and olive oil.
4. Reach for almonds or berries when you need a snack.

One important tip: increase fiber gradually. Adding too much too quickly can cause bloating or discomfort as your gut adjusts. Add a few grams at a time over several weeks, and drink plenty of water—fiber works best when you’re well hydrated.

The bottom line

Eating for better blood sugar control and digestive health doesn’t mean sacrificing variety or flavor. By choosing high-fiber, low-carb foods like leafy greens, chia seeds, avocados, berries and nuts, you can support your GI health, help maintain steady blood sugar levels and feel satisfied throughout the day.

Small changes add up. Pick one or two of these foods to try this week, find ways to enjoy them that work for you and build from there. Your gut (and your energy levels) will thank you.

Want to learn more about eating well? Explore more nutrition resources for more guidance on building healthy eating habits.