Legume

Kidney Beans

Health
ScoreA

Kidney beans are nutrient-dense legumes rich in plant-based protein, fiber, and essential minerals, making them a cornerstone food for sustained energy and metabolic health.

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Why Kidney Beans scores 89

Nutrient density33

Protein quality11

Fiber content10

Healthy fats5

Bioactive compounds14

Glycemic impact10

Top nutrients

% Daily Value per ½ cup (90 g)

Folate 29%Copper 24%Manganese 19%Thiamin 12%Vitamin B6 12%

Nutrition

per_100g

127

Calories

8.7g

Protein

22.8g

Carbs

0.5g

Fat

6.4g

Fiber

Health benefits

Improves insulin sensitivity and reduces postprandial glucose spikes

strong evidence

Resistant starch and soluble fiber slow carbohydrate digestion and absorption, reducing blood glucose fluctuations and lowering insulin demand

Supports cardiovascular health through lipid and homocysteine reduction

strong evidence

Soluble fiber binds cholesterol; folate reduces homocysteine; polyphenols reduce oxidative stress and endothelial inflammation

Enhances gut microbiome diversity and short-chain fatty acid production

moderate evidence

Resistant starch and fiber serve as prebiotics, feeding beneficial bacteria like Faecalibacterium and Roseburia, which produce butyrate for intestinal barrier integrity

Increases sustained satiety and supports healthy body composition

moderate evidence

High protein and fiber content delays gastric emptying and activates satiety hormones (GLP-1, PYY), reducing overall caloric intake

Supports bone mineral density through mineral and phytochemical content

emerging evidence

Manganese, phosphorus, and polyphenolic compounds promote osteoblast activity and reduce bone resorption markers

Pairs well with

·Pair with vitamin C-rich foods (tomatoes, bell peppers, citrus) to enhance non-heme iron absorption by up to 3-fold
·Combine with whole grains (brown rice, quinoa) to create a complete amino acid profile with all nine essential amino acids
·Mix with leafy greens (spinach, kale) to amplify folate intake and polyphenol diversity for enhanced antioxidant effect
·Pair with allium vegetables (garlic, onions) to synergize sulfur compounds and organosulfurs for enhanced anti-inflammatory activity

Practical tips

·Best timing: midday
·Soak dried kidney beans for 12 hours and discard water to reduce lectins and phytates, improving mineral bioavailability and digestibility
·Cook beans with kombu seaweed or a small piece of ginger to further reduce oligosaccharides that cause bloating
·Store cooked beans in glass containers for up to 5 days; freeze portions for up to 3 months to preserve resistant starch content
·Include kidney beans in 2-3 meals weekly (½ to ¾ cup cooked portions) to achieve prebiotic and cardiometabolic benefits documented in research