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Kidney Bean

Legume

Kidney Bean

A fiber-rich, plant-based protein legume shaped like a kidney, ideal for blood sugar control and gut health.

A nutrient-dense legume known for its kidney shape, robust texture, and high fiber and protein content, widely used in chili, soups, and stews.

high-fiber plant protein source

Typical serving · 177g

Common varieties · red kidney bean, light speckled kidney bean, white kidney bean (cannellini)

88health

Overall context score across nutrition, safety, and diet fit

At a glance

Quick facts

Simple indicators based on nutrition, processing, and diet fit.

High proteinHigh fiberLow glycemicWeight lossDiabetes-friendlyGut health

The story

What makes it unique

Kidney beans are slowly digested due to high soluble and insoluble fiber, promoting prolonged satiety and stable blood glucose. Their macronutrient profile features a high protein-to-carbohydrate ratio for a plant food, with resistant starch feeding gut microbiota. When cooked from their minimally processed dried form, they retain maximum nutritional integrity.

Varieties: red kidney bean · light speckled kidney bean · white kidney bean (cannellini)

#kidney beans#legumes#plant protein#high fiber#low glycemic#gut health#weight loss food#resistant starch#blood sugar control

Per 100g

Nutrition breakdown

Macro balance and key metrics at a glance.

Energy

127kcal

Density 1.27 kcal/g

Protein

8.7g

Carbs

22.8g

Fat

0.5g

Fiber

6.4g

Sugar

0.3 g

Sodium

1 mg

Potassium

406 mg

Glycemic index

24

Glycemic load

9

Water content

67%

Standout compounds

Nutrient highlights

  • Fiber

    high

    Promotes satiety and feeds gut microbiome

  • Protein

    moderate

    Supports muscle maintenance and repair

  • Folate

    high

    Essential for cell division and DNA synthesis

  • Iron

    moderate

    Supports oxygen transport in the blood

  • Resistant Starch

    high

    Ferments in the colon to produce beneficial short-chain fatty acids

Wellness map

Health scores & processing

Weight loss
85
Satiety
88
Blood sugar
90
Gut health
92
Heart health
88
Fitness
75
Processing
95

NOVA processing scale

1
Min
2
3
4
Ultra

minimally processed · Whole food

Dried kidney beans are whole, unprocessed foods. Canned versions are processed but remain highly nutritious, especially when rinsed to remove excess sodium.

Diet compatibility

  • Weight loss
  • Muscle gain
  • Diabetes
  • Gut health
  • Low carb
  • High protein
  • Heart health

Relative standing

Food rankings

Qualitative ranks compared to similar whole foods.

  • Satietyexcellent
  • Blood sugarexcellent
  • Nutrient densityexcellent
  • Fitness fuelgood
  • Processing qualityexcellent

Eat with confidence

Food safety profile

Raw kidney beans are highly toxic due to phytohaemagglutinin and must be boiled thoroughly. Canned kidney beans are pre-cooked and safe to eat. Rinsing canned beans reduces sodium and potential BPA exposure from can linings.

85safety

Evidence confidence 95%

  • Pesticideslow
  • Antibioticslow
  • Heavy metalslow
  • Contaminationmoderate

Watch for

  • phytohaemagglutinin (PHA)
  • BPA (in canned varieties)

Safer choices

Dried beans boiled for at least 10 minutes, or no-salt-added canned beans

Prep tips

Soak dried beans for at least 5 hours, discard water, and boil vigorously for 10 minutes before simmering until tender. Always rinse canned beans before use.

Raw or undercooked kidney beans contain high levels of PHA, a toxic lectin that causes severe gastrointestinal distress.

Deep dive

Health analysis

How this food may fit different goals and preparation choices.

  1. Weight loss

    High fiber and protein create strong satiety, reducing overall calorie intake. Low energy density allows for large, filling portions.

  2. Blood sugar

    Very low glycemic index and load. The high fiber and protein content slows carbohydrate absorption, preventing blood sugar spikes.

  3. Fitness & energy

    Provides sustained, slow-releasing energy ideal for endurance activities. The protein aids in muscle repair, though it lacks methionine unless paired with grains.

  4. Gut health

    Rich in resistant starch and soluble fiber that feed beneficial gut bacteria, promoting short-chain fatty acid production and improved colon health.

  5. Processing quality

    Dried beans are whole foods. Canned beans are a convenient, minimally processed alternative, though they may contain added sodium and BPA from can linings.

  6. Food safety

    Must be boiled thoroughly to destroy toxic lectins. Slow cooking raw kidney beans is dangerous. Canned beans are safe and pre-cooked.

  7. Common mistakes

    Cooking dried kidney beans in a slow cooker without boiling first, or failing to soak them adequately, which increases cooking time and reduces digestibility.

  8. Best preparation

    Soak dried beans overnight, discard water, boil vigorously for 10 minutes, then simmer until tender. Rinsing canned beans removes up to 40% of the sodium.

Practical guide

Best use cases

When and how this food fits real eating patterns.

  • Blood sugar friendly meals

    Base for chili or stews that provide steady energy without glucose spikes.

  • Plant-based protein pairing

    Combined with rice or corn to form a complete protein profile for vegan diets.

  • High-volume low-calorie eating

    Adding bulk and satiety to salads and soups without excessive calories.

Balance sheet

Pros & cons

Upsides

  • Excellent source of cholesterol-lowering soluble fiber
  • Very low glycemic load prevents blood sugar spikes
  • High plant-based protein keeps you full
  • Rich in resistant starch for gut microbiome health
  • Affordable and shelf-stable source of essential nutrients

Trade-offs

  • Raw beans are highly toxic if not boiled properly
  • High in oligosaccharides which can cause bloating and gas
  • Not suitable for strict low-carb or ketogenic diets
  • Contain phytic acid which can reduce mineral absorption
  • Canned versions often contain added sodium

Fit check

Who is it for?

Great match

  • plant-based diets
  • blood sugar management
  • high-volume eating
  • gut microbiome support

Consider alternatives

  • strict ketogenic diets
  • low-FODMAP diets
  • people with severe digestive sensitivities to beans

Side by side

How it compares

Open the full head-to-head analysis for nutrition, safety, and practical tradeoffs.

  • Kidney Bean

    This food

    Kidney Bean

    VS95% alike
    Black Beans

    Compare with

    Black Beans

    Black beans and kidney beans are nutritionally nearly identical, though black beans have slightly more fiber and a milder flavor.

    Black beans and kidney beans are nutritionally nearly identical, though black beans have slightly more fiber and a milder flavor.

    Kidney Bean vs Black Beans
  • Kidney Bean

    This food

    Kidney Bean

    VS93% alike
    Pinto Beans

    Compare with

    Pinto Beans

    Pinto beans are slightly higher in calories and carbs, while kidney beans are firmer and lower in calories.

    Kidney beans are slightly lower in calories and carbs than pinto beans, making them a marginally better choice for weight loss.

    Kidney Bean vs Pinto Beans
  • Kidney Bean

    This food

    Kidney Bean

    VS85% alike
    Chickpeas

    Compare with

    Chickpeas

    Chickpeas have more fat and slightly higher calories. Kidney beans are lower in calories and higher in fiber.

    Kidney beans are lower in calories and higher in fiber than chickpeas, offering better satiety and blood sugar control.

    Kidney Bean vs Chickpeas
  • Kidney Bean

    This food

    Kidney Bean

    VS82% alike
    Lentils

    Compare with

    Lentils

    Lentils cook faster and have slightly more protein and fiber per calorie.

    Lentils cook much faster and offer slightly more protein and fiber per calorie than kidney beans, making them a superior quick-cooking option.

  • Kidney Bean

    This food

    Kidney Bean

    VS90% alike
    Cannellini Beans

    Compare with

    Cannellini Beans

    Nutritionally very similar, but red kidney beans have slightly more fiber and antioxidants.

    Cannellini beans are a white variety of kidney bean with nearly identical nutrition, though red kidney beans contain more antioxidants.

    Kidney Bean vs Cannellini Beans
  • Kidney Bean

    This food

    Kidney Bean

    VS88% alike
    Navy Beans

    Compare with

    Navy Beans

    Navy beans are slightly higher in fiber and lower in calories.

    Navy beans are slightly lower in calories and higher in fiber than kidney beans, providing a small edge for satiety and weight loss.

    Kidney Bean vs Navy Beans
  • Kidney Bean

    This food

    Kidney Bean

    VS70% alike
    Edamame

    Compare with

    Edamame

    Edamame is much higher in protein and lower in carbs.

    Edamame provides significantly more protein and fewer carbs than kidney beans, making it better for muscle gain and low-carb diets.

    Kidney Bean vs Edamame
  • Kidney Bean

    This food

    Kidney Bean

    VS65% alike
    Quinoa

    Compare with

    Quinoa

    Quinoa is a seed cooked like a grain, offering complete protein but less fiber.

    Kidney beans offer more fiber and satiety per calorie than quinoa, though quinoa provides a complete protein profile.

    Kidney Bean vs Quinoa
  • Kidney Bean

    This food

    Kidney Bean

    VS50% alike
    Ground Beef

    Compare with

    Ground Beef

    Beef has far more protein and fat but zero fiber.

    Kidney beans provide massive fiber and gut health benefits that ground beef lacks, while beef offers superior complete protein for muscle building.

    Kidney Bean vs Ground Beef
  • Kidney Bean

    This food

    Kidney Bean

    VS60% alike
    Tofu

    Compare with

    Tofu

    Tofu is lower in carbs and calories, higher in fat, and offers complete protein.

    Tofu is lower in carbs and higher in protein than kidney beans, but kidney beans provide far more dietary fiber for gut health.

    Kidney Bean vs Tofu

Common questions

FAQ

Answers aligned with how people search for this food.

  • Are kidney beans good for weight loss?

    Yes, their high fiber and protein content keeps you full longer, helping to reduce overall calorie intake.

  • Can diabetics eat kidney beans?

    Yes, they have a very low glycemic index and their fiber slows sugar absorption, making them excellent for blood sugar control.

  • Are raw kidney beans toxic?

    Yes, raw kidney beans contain phytohaemagglutinin, a toxic lectin. They must be soaked and boiled for at least 10 minutes to be safe.

  • Are canned kidney beans healthy?

    Yes, canned kidney beans are nutritious and convenient. Rinsing them removes excess sodium and makes them a healthy quick option.

  • How much protein is in kidney beans?

    One cup of cooked kidney beans provides about 15 grams of protein, making them a strong plant-based protein source.

  • Can you cook kidney beans in a slow cooker?

    You should never cook raw dried kidney beans in a slow cooker. The temperature is not high enough to destroy the toxic lectins; they must be boiled first.

  • Are kidney beans keto-friendly?

    No, kidney beans are relatively high in carbohydrates and are generally not suitable for strict ketogenic diets.

  • Why do kidney beans cause gas?

    They contain oligosaccharides and resistant starch that are fermented by gut bacteria, which produces gas. Soaking and rinsing can reduce this effect.

Transparency

Data confidence

Estimated confidence for nutrition data, interpretation, safety notes, and comparisons.

95

Nutrition data

95

Health analysis

98

Food safety

90

Comparisons