Should diabetics eat beans?


Beans are a staple food in many diets around the world. They are an excellent source of plant-based protein, fiber, vitamins and minerals. However, when you have diabetes, you may wonder if beans are a good choice given their carbohydrate content. This article provides a detailed look at beans and diabetes, including the benefits of beans, their effect on blood sugar levels, and how diabetics can incorporate them into their diets.

The Benefits of Beans

Here are some of the top benefits that beans can provide:

  • High in fiber – Beans are one of the best sources of fiber. Fiber can help improve blood sugar control, promote feelings of fullness and support heart health.
  • Plant-based protein – Beans are an excellent source of plant-based protein. Getting more plant protein in your diet may help reduce the risk of diabetes complications.
  • Low glycemic index – Most beans have a low glycemic index, meaning they do not cause major spikes in blood sugar levels.
  • Nutrient-rich – Beans are packed with important nutrients like folate, iron, potassium, magnesium and zinc.
  • May aid weight loss – Due to their fiber and protein content, beans may help with weight management.

Beans and Blood Sugar

Despite their carbohydrate content, beans have a low glycemic index. This means they are digested and absorbed slowly, preventing blood sugar spikes.

Here is a look at the glycemic index of some common bean varieties:

Bean Variety Glycemic Index
Black beans 30-42
Chickpeas 28-38
Kidney beans 24-40
Pinto beans 39
Navy beans 38

As you can see, beans are considered low glycemic foods, with glycemic indexes below 55. This means they should only cause modest increases in blood sugar.

The fiber, protein, fat and resistant starch in beans help slow down the digestion process, resulting in a gradual absorption of glucose into the bloodstream. Studies show that increasing your intake of low glycemic foods can improve long-term blood sugar control.

Incorporating Beans into a Diabetic Diet

Here are some tips for diabetics on how to add beans into your meal plan:

  • Try new bean varieties – Mix up your usual rotation with lentils, split peas, black-eyed peas and garbanzos.
  • Gradually increase intake – Start with 1/4 cup portion sizes and slowly work up to 1/2 cup at meals.
  • Swap beans for carbs – Use beans instead of pasta, rice or potatoes in dishes.
  • Mash beans – For a smoother texture, mash beans and incorporate into dips, spreads and patties.
  • Rinse canned beans – Rinsing and draining canned beans can reduce sodium content by up to 40%.
  • Pair with healthy fats – Add avocado, nuts, seeds or olive oil to bean dishes to slow digestion.
  • Add acidic foods – Serve beans with acidic foods like tomatoes or lemon juice to reduce gas-producing compounds.
  • Check blood sugar – Monitor your levels 1-2 hours after eating beans to see individual effects.

It’s also important to be mindful of portion sizes with beans, even though they have a low glycemic index. Eating very large, carb-heavy portions can still increase blood sugar levels. Talk to your dietitian or doctor about appropriate bean serving sizes for your diet plan.

Sample Bean-Based Meals for Diabetics

Here are some healthy meal ideas that incorporate beans:


  • Scrambled eggs with black beans and salsa
  • Toast with mashed avocado and white bean spread
  • Quinoa porridge with chickpeas and apples


  • Veggie and chickpea salad with balsamic vinaigrette
  • Pinto bean and vegetable soup
  • Black bean burger on a whole grain bun with roasted sweet potato fries


  • Chicken chili with kidney beans
  • Vegetable and lentil coconut curry with brown rice
  • Black bean enchiladas with salsa and low-fat cheese


  • Edamame
  • Bean dip with celery sticks
  • Apple slices with natural peanut butter

As you can see, beans can be incorporated into a wide variety of diabetic-friendly meals and snacks. Focus on balancing them with lean proteins, non-starchy vegetables and healthy fats.

Precautions for Diabetics on a Bean-Rich Diet

Here are some precautions diabetics should take when following a bean-rich diet:

  • Drink plenty of water – Beans are high in fiber, which can absorb water in the gut. Stay well hydrated to avoid constipation.
  • Introduce gradually – Increase bean intake slowly to give your gut time to adjust and reduce gas and bloating.
  • Avoid overeating – Don’t rely on beans as your only source of carbs or protein to prevent going overboard on portions.
  • Check glucose response – Monitor your blood sugar levels when trying new bean dishes or increasing your intake.
  • Use caution with raw sprouts – Raw bean sprouts may be more difficult to digest. Cook sprouted beans thoroughly if concerned.

Diabetics who take medication that lowers blood sugar, such as insulin or metformin, may be at higher risk for low blood glucose when eating fiber-rich beans. Monitor your levels closely and adjust medications as needed under medical supervision.


Beans can be a nutritious addition to a diabetic diet. They provide protein, fiber, vitamins and minerals, while having a low glycemic impact. Pay attention to portion sizes and introduce beans slowly to minimize digestive issues. Balance bean dishes with non-starchy vegetables, healthy fats and lean proteins. With proper precautions, beans can be an excellent part of your meal plan to improve your overall nutrition.

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