Legumes & beans

Legumes and beans are one of the most reliable high scorers in our database, and the reason is structural: they pack protein, fiber, folate, iron, potassium, and magnesium into relatively few calories. That per-calorie efficiency is exactly what our Nutrient Density Score rewards, which is why this category carries a median of 63, well above most staple starches.

The foods at the very top are concentrated soy fractions, where processing strips away fat and some carbohydrate and leaves protein and minerals behind. Soy protein isolate, potassium type and defatted soy flour both reach 89 for this reason, while enhanced soymilk lands at 88 on the strength of added calcium and vitamins. Whole cooked beans score lower per calorie but remain dense, affordable, and far less processed.

How to choose

Scores drop when beans are fried, packed in oil, or sweetened, since those added calories dilute the nutrient-per-calorie ratio. Favor dried or plain canned beans, and rinse to cut sodium. Isolates like soy protein concentrate are useful for boosting protein without added fat, though whole legumes deliver fiber that refined fractions lose. Individual needs vary, so weigh protein goals, digestion, and sodium tolerance when you build a plate. This is reference data, not dietary advice.