Beets Glycemic Index
Beets have a medium-high GI but low GL and are rich in nitrates that may improve blood pressure and exercise performance.
Back to GI ChartOverview
Beets, or beetroot, are the edible taproots of the beet plant, typically deep red but also available in golden and striped varieties. They are eaten roasted, boiled, steamed, pickled, or grated raw into salads, and are also processed into beet juice and powders. From a glycemic perspective, beets are somewhat unique among vegetables: they contain more natural sugars than leafy greens, giving them a slightly sweet taste and a medium glycemic index of around 64. However, typical serving sizes are modest and rich in water and fiber, so the glycemic load of a half-cup serving is low—about 5. This means that, in realistic portions, whole beets cause only a gentle rise in blood sugar for most people. Beyond their carbohydrate content, beets are valued for their high concentration of inorganic nitrates, which are converted in the body to nitric oxide, a compound that helps relax blood vessels and improve blood flow. They also supply folate, potassium, and distinctive pigments called betalains with antioxidant and anti-inflammatory properties. For people with diabetes, beets can be included as a flavorful, colorful side or salad ingredient when portion size is controlled and paired with protein, healthy fats, and other non-starchy vegetables.
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Nutrition Facts for Beets
Per serving: 1/2 cup (85g)
Macronutrients
Expanded Analysis
Digestion Rate
Beets contain naturally occurring sugars and relatively little fat, so their carbohydrates are digested more quickly than those in very fibrous vegetables. Cooking softens the cell walls and makes the sugars more accessible, which contributes to their medium GI. However, the fiber and water content still slow absorption compared with refined sugars or juices, and the overall digestion rate is moderate rather than rapid when beets are eaten as part of a mixed meal.
Satiety Effects
Although beets are not as fiber-dense as some legumes or whole grains, they provide bulk and contribute to fullness when eaten in salads, side dishes, or mixed vegetable plates. Their natural sweetness can help satisfy cravings for sweet flavors without resorting to high-sugar desserts, which may indirectly support appetite control. Pairing beets with protein and healthy fats, such as goat cheese and walnuts or chickpeas and olive oil, significantly enhances satiety.
Energy Density
Beets are low in calories—roughly 29 kcal per half-cup cooked serving—yet offer strong flavor and color. This low energy density means they can be used generously within reason to add interest to meals without substantially increasing total caloric load. The main consideration for people with diabetes is not calories but total carbohydrate intake from beets and other starches combined.
Traffic Light Summary
Micronutrients
Better Blood Sugar Management for Beets Lovers
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The Science Behind the Glycemic Index
How GI Was Measured
The GI of beets is determined using the standard protocol: healthy volunteers consume a portion of beets containing 50 grams of digestible carbohydrate, and their blood glucose is measured over two hours. The area under this curve is compared to their response after 50 grams of glucose (GI = 100). Because 50 grams of carbohydrate from beets represents a relatively large portion, the reported GI reflects a high test dose rather than a typical side-dish serving.
Why This Food Has This GI
Beets have a medium GI of about 64 largely because they contain easily digestible natural sugars and relatively modest fiber per gram of carbohydrate. Cooking further softens the root and increases the availability of these sugars. At the same time, the presence of some fiber and the intact plant matrix keep glycemic responses lower than those produced by refined sugar or beet juice. The lack of significant fat or protein in beets themselves means there is little intrinsic slowing of digestion beyond fiber.
Factors Affecting GI
- Cooking method, time, and texture matter: longer boiling or roasting until very soft makes sugars more available and may nudge GI upward compared with lightly cooked or raw, grated beets that retain a firmer structure and slightly more intact fiber.
- Form and added ingredients greatly change glycemic impact: beet juice, smoothies, and pickled beets packed in sugary brine remove or dilute fiber and often concentrate sugars, causing a faster and higher blood sugar rise than plain roasted or steamed beets.
- Portion size and meal composition determine overall glycemic load: modest servings eaten with protein, healthy fats, and high-fiber vegetables produce a gentle rise in blood sugar, whereas large portions eaten alone or alongside other starches can push GL higher.
Blood Sugar Impact
Short-Term Effects
In the short term, eating a typical side serving of whole beets causes a modest, manageable rise in blood glucose for most people. Because the GI is in the medium range but the portion used in real life is small and rich in water, the glycemic load stays low. This means that, when beets are eaten as a side dish with a source of protein and fat—such as fish, poultry, cheese, or nuts—the overall blood sugar impact is generally mild. By contrast, beet juice or large quantities of roasted beets eaten alone can produce a more noticeable rise in blood sugar because they deliver more sugar with less fiber and without balancing nutrients.
Long-Term Effects
Over time, including moderate portions of beets within a balanced diet is unlikely to harm glycemic control and may provide indirect benefits. The natural nitrates in beets can help support better blood vessel function and lower blood pressure, which is important for people with diabetes who have elevated cardiovascular risk. Their fiber and antioxidant compounds support gut and vascular health. However, relying heavily on high-sugar beet products, such as juice or sweetened pickles, without accounting for their carbohydrate content could contribute to higher overall glycemic load.
Insulin Response
Because beets contain digestible carbohydrate, they stimulate insulin release as blood sugar rises after a meal. The response is moderate in the context of a balanced plate and appropriate serving size. For insulin users, the carbohydrate content of beets should be counted along with other starches, but the required insulin dose per gram of carbohydrate is similar to that for other non-starchy vegetables with modest sugar content. The nitrate and antioxidant components of beets may also support endothelial function, which indirectly benefits insulin sensitivity and vascular health.
Second Meal Effect
Beets are not classic second-meal-effect foods in the way that high-resistant-starch grains and legumes are. Still, their fiber and supportive effects on blood flow may modestly contribute to improved metabolic handling over the course of the day. The main driver of second-meal benefits in beet-inclusive diets is likely the overall pattern of eating—high in vegetables and minimally processed foods—rather than beets alone.
Health Benefits
Beets offer a combination of vascular, antioxidant, and nutrient benefits that can be particularly relevant for people with diabetes and cardiovascular risk. Their naturally occurring nitrates are converted to nitric oxide in the body, helping relax and dilate blood vessels, which may lower blood pressure and improve blood flow. Beets also provide folate, manganese, potassium, and vitamin C, along with betalain pigments that have demonstrated antioxidant and anti-inflammatory activity in experimental studies. These properties make beets a valuable component of heart-healthy, plant-forward eating patterns when consumed as whole foods rather than juices loaded with added sugars. Because their glycemic load is low at typical portion sizes, they can add color, flavor, and variety to meals without significantly increasing blood sugar when paired with protein and healthy fats.
Rich in nitrates
Beets are one of the richest dietary sources of inorganic nitrates, which are converted to nitric oxide and support vasodilation, improved blood flow, and potentially better oxygen delivery to working muscles and vital organs.
View StudyMay lower blood pressure
Randomized controlled trials of beetroot juice and whole beet products have shown reductions in systolic and diastolic blood pressure in both healthy individuals and those with hypertension.
View StudyContains betalains antioxidants
Betalain pigments in beets exhibit antioxidant and anti-inflammatory properties in cell and animal models, helping to neutralize reactive oxygen species and potentially reducing low-grade inflammation associated with cardiometabolic disease.
View StudySupports exercise performance
Dietary nitrate from beets has been shown to improve exercise tolerance and efficiency in some studies by enhancing oxygen utilization, reducing the oxygen cost of submaximal exercise, and improving blood flow to working muscles.
View StudyRisks & Precautions
Allergies
Allergy to beets is uncommon but can occur, causing oral itching, hives, or digestive symptoms in sensitive individuals.
Overconsumption
Eating very large quantities of beets or drinking large amounts of beet juice can significantly increase sugar and oxalate intake. High oxalate intake may contribute to kidney stone formation in susceptible individuals. Some people also notice red or pink urine or stool (beeturia), which is usually harmless but can be alarming.
Medication Interactions
Beets themselves have no major direct drug interactions, but people taking antihypertensive medications should monitor blood pressure as beet products can enhance blood pressure-lowering effects. Concentrated beet juices may also affect blood sugar management if not accounted for in carbohydrate counting.
Toxicity Warnings
As with other root vegetables, beets can accumulate nitrates from fertilizer use, but in moderate amounts this is generally considered safe and may be beneficial for vascular health. Proper washing and cooking minimize microbial contamination. People using well water or multiple high-nitrate foods and supplements should avoid excessive combined intake, especially in infants and those with specific medical conditions.
Special Populations
Pregnancy
Beets can be a good source of folate during pregnancy, but beet juice and supplements should be used in moderation to avoid excessive nitrate or sugar intake. Whole cooked or roasted beets in meals are generally safe.
Kidney Issues
Individuals with a history of calcium oxalate kidney stones or advanced kidney disease may need to limit high-oxalate foods, including beets, depending on their healthcare provider’s advice.
Heart Conditions
Those on blood pressure medications should be aware that beet products may further lower blood pressure. This is usually beneficial but can occasionally contribute to lightheadedness in sensitive individuals.
Who Should Limit It
People with poorly controlled blood sugar who consume large portions of roasted beets or beet juice without adjusting medications or carbohydrate intake should limit or carefully portion these foods. Those with a history of kidney stones or specific oxalate restrictions may also need to limit beets.
Portion Guidance
Recommended Serving
A practical serving for most adults with diabetes is about 1/2 cup (85g) cooked beets as a side dish, or a similar amount grated raw into salads, counted toward daily carbohydrate intake.
Portion Scaling & Glycemic Load
- 10gGL: 1
- 30gGL: 2
- 100gGL: 6
Visual Examples
- Handful size
- Cup measurement
- Snack pack equivalent
Frequency of Consumption
Beets can be included several times per week in a diabetes-friendly diet, particularly when balanced with plenty of non-starchy vegetables and when beet juices and sugary preparations are limited.
Impact of Preparation
Raw
Raw beets, thinly sliced or grated, retain all their fiber and vitamin C. They have a slightly crunchier texture and may be digested a bit more slowly than very soft cooked beets.
Cooked
Cooking beets (roasting, boiling, steaming) softens their texture and can increase the availability of sugars, modestly raising the GI compared with raw but preserving most of their key nutrients when not overcooked.
Roasted
Roasting concentrates flavor and sweetness as moisture evaporates. This may make beets more palatable but also makes sugars slightly more concentrated per bite, so portion control remains important for those closely managing carbohydrate intake. Tossing roasted beets with vinegar, herbs, and a small amount of oil keeps the dish flavorful without adding much extra sugar or saturated fat.
Fried
Deep-fried beet chips or fries can add substantial fat and calories, moving the food away from its naturally light, healthful profile. Baked beet chips are a better alternative when prepared with minimal added oil.
Boiled
Boiling can cause some water-soluble nutrients to leach into the cooking water, which is usually discarded. Light boiling until just tender helps balance texture with nutrient retention.
Processed
Pickled beets, beet juices, and beet powders vary widely in added sugar content. Pickled beets in sugary brine and sweetened juices have a higher glycemic impact than plain cooked beets, while unsweetened canned or frozen beets are closer to the whole-food profile. Reading labels carefully helps you choose products that deliver nitrate and antioxidant benefits without unnecessary added sugars.
Storage Effect on GI
Chilling cooked beets and serving them in salads does not dramatically change GI but can improve convenience and may slightly alter perception of sweetness and texture. Storing beets with minimal sugary dressings and pairing them with protein-rich ingredients keeps the overall glycemic effect modest.
Cooking Effect on Nutrients
Heat reduces vitamin C but largely preserves minerals and many phytonutrients. Gentle roasting or steaming tends to retain more nutrients than prolonged boiling, especially when beets are cooked until just tender rather than very soft. Using the cooking liquid in soups or sauces can recapture some water-soluble vitamins and pigments that leach into the water.
Usage Guidance
For Blood Sugar Management
Optimal Pairings
- Roasted beets with goat cheese and walnuts on a bed of greens
- Beet and chickpea salad dressed with olive oil and lemon
- Beets served alongside grilled fish or chicken with non-starchy vegetables
- Small portions of beets mixed into grain bowls with quinoa or barley
Combining beets with protein, healthy fats, and high-fiber vegetables or whole grains slows the absorption of their natural sugars, lowering the overall glycemic impact of the meal. Nuts, seeds, legumes, and oils rich in unsaturated fats are particularly helpful partners. This approach turns a mildly sweet vegetable into part of a balanced, Mediterranean-style plate rather than a stand-alone sugar source, which is especially important for people trying to stabilize blood sugar and blood pressure.
Meal Timing Tips
Beets can be used at lunch or dinner as part of salads, sides, or bowls. Because they provide modest carbohydrate, some people prefer to enjoy them earlier in the day when they are more active, but they can fit at any meal when portions are accounted for.
Best Ways to Reduce GI Impact
- Roast for concentrated flavor
- Add to salads raw or cooked
- Avoid pickled beets with added sugar
- Try with goat cheese and walnuts
Culinary Uses
Common Uses
Roasted side dishes, salads, soups (like borscht), smoothies (in small amounts), pickled condiments, and colorful additions to grain bowls or veggie platters.
Simple Preparation Ideas
- Roast whole beets in foil until tender, then peel and slice into salads.
- Steam or boil beet cubes and dress with olive oil, vinegar, and herbs.
- Grate raw beets into slaws with carrots and cabbage.
- Blend a small amount of beet into a smoothie for color and flavor, balancing with greens and unsweetened yogurt.
Recipe Ideas
- Roasted beet and goat cheese salad with walnuts and arugula
- Beet and lentil salad with lemon-tahini dressing
- Light borscht served with a dollop of plain Greek yogurt
Substitution Tips
Use beets instead of higher-sugar glazed vegetables or sweetened side dishes. Add roasted beets to salads in place of some dried fruits to provide color and sweetness with more fiber and nutrients. You can also swap a portion of starchy sides like sweet potato casserole or candied carrots for simple roasted beets to reduce added sugar while keeping a naturally sweet element on the plate.
Diet Suitability
Diabetes
Suitable in modest portions due to low GL, especially when paired with protein, fats, and non-starchy vegetables and when beet juice and sugary preparations are limited or carefully counted.
Keto
Not ideal for strict ketogenic diets because of their natural sugars, though small amounts may fit in more liberal low-carb plans.
Low-Carb
Can fit into moderate low-carb diets in small side dish portions, but should be counted toward daily carbs and balanced with plenty of very low-carb vegetables.
Low-GI
Acceptable within low-GI patterns when portion size is moderate and balanced with other low-GI foods such as leafy greens, legumes, and whole grains.
Weight Loss
Helpful because of low calorie density and high flavor, supporting satisfaction in calorie-controlled diets. Using small portions of beets to add color and sweetness can make salads and vegetable dishes more appealing without resorting to high-calorie desserts.
Heart-Healthy
Highly suitable due to nitrate content and supportive effects on blood pressure when consumed as whole beets without excess added sugars or salt, particularly within DASH- or Mediterranean-style patterns.
Plant-Based
Excellent choice for vegetarian and vegan diets, adding color, nutrients, and variety, and pairing well with legumes, whole grains, nuts, and seeds in plant-forward meals.
Food Comparisons
Alternatives & Substitutions
Lower GI Alternatives
- Leafy greens such as spinach or kale
- Cruciferous vegetables like broccoli or Brussels sprouts
- Zucchini and bell peppers
Foods Replaced by This
- Candied carrots or sweet glazed vegetables
- High-sugar fruit salads
- Desserts used to satisfy sweet cravings
- Sugar-sweetened beet or vegetable juices
Budget-Friendly Options
- Buying fresh beets in bulk and roasting them at home
- Canned beets packed in water with no added sugar
- Frozen beet blends without sugary sauces
Allergy-Safe Alternatives
- Carrots for similar sweetness and color
- Winter squash such as butternut
- Red cabbage for color and crunch
Research Library
Beetroot and cardiovascular/metabolic health
clinical trial / meta-analysis / GI database
Clinical and experimental studies suggest that beetroot-derived nitrates can lower blood pressure and improve aspects of vascular and exercise function, with potential benefits for cardiometabolic health.
View SourceBeetroot juice and blood pressure reduction
clinical trial / meta-analysis / GI database
Supplementation with beetroot juice has been shown in several randomized trials to produce modest but meaningful reductions in systolic and diastolic blood pressure in hypertensive and prehypertensive adults.
View SourceDietary nitrate, beets, and exercise performance
clinical trial / meta-analysis / GI database
Studies in athletes and recreationally active adults indicate that nitrate-rich beetroot products can improve exercise tolerance, time to exhaustion, and oxygen efficiency during submaximal activity.
View SourceBeetroot components and oxidative stress
clinical trial / meta-analysis / GI database
Experimental research suggests that betalains and other beetroot phytochemicals may mitigate oxidative stress and inflammation, mechanisms that contribute to vascular damage in diabetes.
View SourceMaster Your Metabolic Health
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Frequently Asked Questions About Beets and Blood Sugar
Medical Disclaimer
The information provided on this page is for educational and informational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician, dietitian, or other qualified health provider with any questions you may have regarding a medical condition or dietary changes, especially if you have diabetes, allergies, or other health concerns. Never disregard professional medical advice or delay in seeking it because of something you have read here.
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