Keep your blood sugar under control—and lower your risk of diabetes—by adding more of these 15 foods that can help reduce blood sugar levels.
Blood sugar naturally rises and falls throughout the day in response to food, activity, stress, and other factors. Keeping blood sugar within a healthy range is important for overall health, particularly for people with diabetes, prediabetes, or insulin resistance.
Not all foods affect blood sugar the same way. Foods high in refined sugar and low in protein or fiber tend to cause sharp blood sugar spikes. Foods rich in protein, healthy fats, and fiber slow digestion and help stabilize blood sugar while keeping you full.
Fortunately, many wholesome foods support balanced blood sugar and also supply vitamins, minerals, and antioxidants.
Below are 15 nutrient-dense foods that can help lower blood sugar while keeping you satisfied.
1. Broccoli
Non-starchy vegetables like broccoli are low in calories and carbohydrates but high in fiber, which slows digestion and the absorption of sugar into the bloodstream, reducing post-meal spikes. Research shows that pairing broccoli with starchy foods such as white rice can significantly improve post-meal blood sugar response compared with the starchy food alone.
Broccoli also contains plant compounds such as sulforaphane and glucosinolates that may improve insulin sensitivity, helping the body move glucose from the blood into cells more effectively.
2. Olive Oil
Olive oil is a healthy fat to include in cooking and dressings. Adding fats to meals—along with protein and fiber—helps slow digestion and stabilizes blood sugar while increasing satiety. Higher olive oil intake has been associated with reduced risk of developing diabetes and improvements in fasting blood glucose in people with diabetes.
3. Seafood
Seafood is a high-quality source of protein, which helps blunt post-meal blood sugar rises and keeps you full. Dietary guidelines recommend regular seafood consumption as part of a balanced diet. Fatty fish, in particular, may offer extra benefits for blood sugar regulation and provide heart-healthy omega-3 fatty acids, which support cardiovascular health—a key consideration for people with diabetes.
4. Mushrooms
Mushrooms are low in calories and carbohydrates and contain natural compounds that can reduce sugar absorption from the digestive tract. They are also one of the few food sources of vitamin D; low vitamin D levels have been linked to insulin resistance, a condition in which cells respond less effectively to insulin.
5. Beans and Lentils
Although beans and lentils contain carbohydrates, they are rich in plant protein and soluble fiber, which slows digestion and can improve post-meal blood sugar response. Many studies show regular consumption of legumes supports better blood sugar control and may lower the risk of developing diabetes.
6. Nuts and Nut Butter
Nuts and natural nut butters make satisfying, blood-sugar-friendly snacks. They provide protein, healthy fats, and nutrients such as vitamin E, magnesium, and potassium. Regular nut consumption has been associated with improved blood sugar control and a lower risk of type 2 diabetes. Try a handful of nuts or a slice of whole-grain toast with peanut butter for a balanced snack.
7. Chia and Flax Seeds
Chia seeds and ground flaxseeds are easy additions to meals and snacks and supply concentrated fiber and healthy fats. Daily intake of ground flaxseed has been shown to reduce blood sugar and improve insulin sensitivity in some studies. Sprinkle them into yogurt, oatmeal, or smoothies to boost fiber and slow carbohydrate absorption.
8. Kimchi and Sauerkraut
Fermented foods like kimchi and sauerkraut contain beneficial probiotic bacteria that support a healthy gut microbiome. A balanced gut microbiome is linked to better insulin sensitivity and improved metabolic health, so including probiotic-rich foods alongside fiber-rich choices can support blood sugar regulation.
9. Avocado
Avocados are low in sugar and high in monounsaturated fats and fiber—an ideal combination for preventing post-meal blood sugar spikes. Regular avocado consumption has been associated with better fasting blood glucose and a reduced risk of developing diabetes, making them a smart addition to salads, toast, and bowls.
10. Leafy Greens
Leafy greens such as kale, spinach, Swiss chard, and cabbage are nutrient-dense, low in calories and carbohydrates, and rich in antioxidants. Diets high in leafy greens are associated with a lower risk of diabetes, and their antioxidant content may help support balanced blood sugar levels. Add leafy greens to salads, smoothies, and cooked dishes to increase intake.
11. Raspberries
Fruits contain natural sugars, but some are lower in sugar and higher in fiber than others. Raspberries are especially high in fiber—about 8 grams per cup—and relatively low in sugar, which helps slow sugar absorption and reduce blood sugar spikes. Berries also provide antioxidants that protect against inflammation.
12. Unsweetened Greek Yogurt
Plain, unsweetened Greek yogurt is higher in protein than regular yogurt, often providing around 20 grams of protein per 7-ounce serving. That protein helps control blood sugar, while probiotic cultures support gut health, which is linked to better metabolic outcomes. Choose unsweetened varieties to avoid added sugars.
13. Eggs
Eggs are a low-carbohydrate source of high-quality protein and healthy fats, making them useful for stabilizing blood sugar. Diets higher in protein and lower in refined carbohydrates have been shown to improve blood sugar control. Eggs also supply nutrients like choline and potassium.
14. Oats
Although oats contain carbohydrates, they are rich in beta-glucan, a soluble fiber that slows digestion and improves blood sugar response. Regular consumption of oats has been linked to better blood sugar management and lower cholesterol, making them a nourishing option—especially when paired with protein and healthy fats.
15. Apple Cider Vinegar
Some research suggests apple cider vinegar can help control post-meal blood sugar. Small amounts—such as a few teaspoons diluted in water before a meal or a vinegar-based dressing—may reduce postprandial glucose response for some people.
Bottom Line
No single food is a magic cure for high blood sugar, and these foods should not replace prescribed medication. A balanced eating pattern that emphasizes protein, healthy fats, fiber, and minimally processed foods while limiting added sugars supports better blood sugar control. Combining dietary choices with regular physical activity, stress management, and adequate sleep further improves metabolic health.
If you have personalized dietary questions or medical conditions that affect blood sugar, consult your healthcare provider or a registered dietitian for individualized guidance.