Soybean
Score
Soybeans are legumes rich in complete plant-based protein, containing all nine essential amino acids, along with bioactive compounds like isoflavones and saponins that support cardiovascular and metabolic health.
Why Soybean scores 86
Nutrition
per_100g
Health benefits
Complete plant-based protein synthesis and muscle maintenance
strong evidenceSoybeans contain all nine essential amino acids in adequate ratios, enabling muscle protein synthesis equivalent to animal proteins; leucine content particularly stimulates mTOR-mediated muscle building pathways
Cardiovascular risk reduction and improved lipid profiles
strong evidenceSoy isoflavones (genistein, daidzein) and saponins improve endothelial function, reduce LDL oxidation, and enhance nitric oxide bioavailability; soy protein itself lowers LDL cholesterol independent of lipid changes
Enhanced bone mineral density and osteoporosis prevention
moderate evidenceIsoflavones act as selective estrogen receptor modulators (SERMs), reducing bone resorption; concurrent magnesium and phosphorus content supports mineralization; particularly relevant for postmenopausal women
Improved hepatic function and lipid metabolism
moderate evidenceHigh choline content supports phosphatidylcholine synthesis, reducing hepatic lipid accumulation (NAFLD prevention); methyl-donor activity optimizes methylation cycles critical for detoxification
Cognitive function and neuroinflammation reduction
emerging evidenceCholine is a precursor for acetylcholine and phosphatidylcholine in neuronal membranes; isoflavones demonstrate neuroprotective effects via antioxidant and anti-inflammatory pathways in preclinical models
Pairs well with
- ·Pair with citrus (orange, lemon) or tomatoes because vitamin C enhances non-heme iron bioavailability from soybeans by 2-3 fold, increasing iron absorption efficiency
- ·Combine with allium vegetables (garlic, onion) because organosulfur compounds synergize with soy isoflavones to enhance antioxidant and anti-inflammatory pathways
- ·Pair with cruciferous vegetables (broccoli, cabbage) because both are estrogen metabolism modulators; the combination may optimize estrobolome balance and SHBG levels
- ·Combine with turmeric or ginger because curcumin and gingerols enhance isoflavone bioavailability and amplify anti-inflammatory signaling through shared molecular pathways
Practical tips
- ·Best timing: midday
- ·Choose fermented soy products (tempeh, miso, natto) when possible over unfermented forms; fermentation increases bioavailability of isoflavones and eliminates antinutrients like phytic acid and trypsin inhibitors
- ·Soak dried soybeans for 8-12 hours before cooking to reduce oligosaccharide content (which causes digestive gas) and further reduce phytic acid; discard soaking water
- ·Store cooked soybeans in airtight containers at 4°C for up to 5 days, or freeze for up to 3 months; avoid heating soybeans repeatedly as this degrades heat-sensitive isoflavones
- ·Consume 1-2 servings (¼-½ cup cooked) daily to obtain meaningful isoflavone content (25-40 mg) supported by longevity research without exceeding excessive intake levels
- ·If using soy milk or supplements, verify third-party testing for heavy metals (cadmium, arsenic) as soybeans can accumulate these elements depending on soil conditions
