Beans
Beans are legume seeds rich in plant-based protein, fiber, and polyphenols that support metabolic health and longevity. They are a foundational food in the world's longest-lived populations (Blue Zones).
Nutrition · per ~90 g serving · ≈ ½ cup cooked
- Folate44.1 mcg11% DV
- Copper0.20 mg22% DV
- Manganese0.38 mg16% DV
- Iron2.2 mg12% DV
- Magnesium45.0 mg11% DV
- Phosphorus117.0 mg9% DV
- Zinc0.85 mg8% DV
- Potassium351.9 mg7% DV
- Sugars0.29 g
- Quercetin~14 mg
- Inulin / Prebiotic fibre~2.7 g
- Polyphenols~135 mg
Score · 75/100
Vitamins & minerals packed in relative to calories — the single biggest driver of the score.
How much protein it delivers, by absolute grams and per calorie.
Dietary fiber for gut health, satiety and steadier blood sugar.
Fat quality — unsaturated vs saturated, and trans-fat free.
Polyphenols, flavonoids and other beneficial plant compounds for this food group.
Low sugar with a high fiber-to-carb ratio scores best — gentler on blood sugar.
- Copper24% DV
- Manganese18% DV
- Iron14% DV
- Folate12% DV
- Magnesium12% DV
Overview
Beans, domesticated over 7,000 years ago in Mesoamerica and the Fertile Crescent, are nutrient-dense legumes that form a cornerstone of longevity diets. They deliver approximately 8-9g of protein per cooked cup, making them an exceptional plant-based protein source, alongside substantial fiber (6-8g per cup) that feeds beneficial gut microbiota. Beans contain resistant starch, which resists digestion and acts as a prebiotic, promoting short-chain fatty acid production linked to metabolic health and reduced inflammation. They are rich in polyphenolic compounds—including kaempferol, quercetin, and catechin—with potent antioxidant and anti-inflammatory properties. Different bean varieties (black, kidney, pinto, chickpeas) contain distinct phytochemical profiles, making dietary diversity important. Regular bean consumption is associated with improved glycemic control, lower cardiovascular disease risk, and enhanced longevity in epidemiological studies. The high satiety index helps with weight management, while the magnesium and potassium content supports cardiovascular function. Beans are also among the most affordable nutrient-dense foods globally, making them accessible for sustainable dietary patterns.
Health Benefits (5)
- Improved glycemic control and reduced type 2 diabetes riskstrongHigh soluble fiber and resistant starch slow glucose absorption, reducing postprandial blood sugar spikes and improving insulin sensitivity over time
- Enhanced cardiovascular health and reduced hypertensionstrongPotassium, magnesium, and polyphenols work synergistically to improve endothelial function, reduce arterial stiffness, and lower blood pressure
- Increased satiety and improved weight managementmoderateHigh protein and fiber content slows gastric emptying, prolonging satiety signals and reducing overall caloric intake when eaten as part of meals
- Enhanced gut microbiota diversity and short-chain fatty acid productionstrongResistant starch and fiber serve as prebiotics, selectively feeding beneficial bacteria like Faecalibacterium prausnitzii, which produce butyrate for intestinal and systemic health
- Reduced systemic inflammation and improved antioxidant statusmoderatePolyphenols (kaempferol, quercetin) inhibit pro-inflammatory cytokines and oxidative stress pathways implicated in aging and chronic disease
Food Pairings
- ·Pair with tomatoes because lycopene absorption increases with the heat and fat used in cooking beans together, enhancing cardiovascular benefits
- ·Combine with whole grains (rice, quinoa) because this creates a complete amino acid profile with all nine essential amino acids, optimizing plant-based protein quality
- ·Eat with leafy greens (spinach, kale) because vitamin C in greens enhances iron bioavailability from beans, addressing the lower bioavailability of non-heme iron
- ·Pair with olive oil because monounsaturated fats enhance absorption of fat-soluble polyphenols and improve satiety signaling
Practical Tips
- ·Soak dried beans 8-12 hours before cooking and discard the soaking water to reduce oligosaccharides (raffinose family) that cause digestive distress; canned beans offer convenience with minimal nutritional loss
- ·Cook beans until fully tender (not mushy) to minimize antinutrient lectins while preserving fiber and polyphenols; pressure cooking reduces cooking time by 70% while maintaining nutrient density
- ·Consume beans regularly (3-4 servings weekly) rather than sporadically, as consistent consumption allows gut microbiota to adapt, reducing bloating over 2-3 weeks
- ·Store cooked beans in airtight containers refrigerated for up to 5 days, or freeze for up to 3 months to enable batch cooking and convenient meal preparation
- ·Sprout dried beans for 2-3 days before cooking to increase enzyme activity, reduce phytic acid by 20-30%, and enhance bioavailability of minerals
Optimal Timing
Beans are best consumed at lunch or dinner as a substantial source of plant protein and fiber that stabilizes blood glucose for hours. The fiber and resistant starch support postprandial glucose control when consumed with meals containing carbohydrates.
Beans break a fast due to their protein and carbohydrate content; they are optimal as part of regular meals rather than standalone fasting windows. Their high fiber requires adequate hydration, so consume with 8oz+ water.
Systems supported
body systems this food feedsPathways supported
biochemical reactions enabled by this foodCompared to other legumes
Per 100 g of the default form. Bars show how much higher or lower beans is than the average across 26 peer foods in this category. Green means a favorable direction; amber means the opposite.
What people ask about beans
What is beans?
Beans is classified as a legume. Beans are legume seeds rich in plant-based protein, fiber, and polyphenols that support metabolic health and longevity.
Is beans healthy?
Beans scores 75/100 in Formulate, making it a solid choice. Its strongest contributions come from Copper, Manganese, Iron. The score blends nutrient density, fiber, healthy fats, protein quality, bioactive compounds, and glycemic impact.
Is beans high in protein?
Moderately — it contributes meaningful protein. A 90 g serving provides about 7.8 g of protein (~16% of the 50 g daily value).
Is beans high in fiber?
Yes — it's a high-fiber food. A 90 g serving provides about 5.7 g of fiber (~20% of the 28 g daily value).
What vitamins and minerals are in beans?
In a 90 g serving, beans is highest in Copper (~22% DV), Manganese (~16% DV), Iron (~12% DV), Magnesium (~11% DV), Folate (~11% DV).
Is beans keto-friendly?
Not really. A 90 g serving has about 14.9 g of net carbs (20.5 g total minus 5.7 g fiber).
When is the best time to eat beans?
Best in the midday. Beans are best consumed at lunch or dinner as a substantial source of plant protein and fiber that stabilizes blood glucose for hours. The fiber and resistant starch support postprandial glucose control when consumed with meals containing carbohydrates.
How much beans should I eat?
A typical serving is around 90 g (~112 kcal), based on the FDA's Reference Amount Customarily Consumed for this food category. There's no fixed daily target — most adults benefit from rotating beans alongside several other legume sources.
What pairs well with beans?
Beans pairs nicely with: Pair with tomatoes because lycopene absorption increases with the heat and fat used in cooking beans together, enhancing cardiovascular benefits; Combine with whole grains (rice, quinoa) because this creates a complete amino acid profile with all nine essential amino acids, optimizing plant-based protein quality; Eat with leafy greens (spinach, kale) because vitamin C in greens enhances iron bioavailability from beans, addressing the lower bioavailability of non-heme iron; Pair with olive oil because monounsaturated fats enhance absorption of fat-soluble polyphenols and improve satiety signaling.
Supplements that mirror Beans's nutrient profile
Encyclopedia entries that supply the same signature nutrients beans contributes. Click through to see clinical dose ranges, evidence quality, and bioavailable forms.
Signature nutrients in Beans
These are the nutrients beanscontributes meaningfully toward (≥10% DV per 100 g serving). Click one to see what it does in the body, which supplements concentrate it, and which other foods are top sources.