To get more nutritional bang for your buck, buy beans, potatoes, peas and corn.
A recent study from the University of Washington compared 98 vegetables in terms of value and nutrition. While dark green vegetables, such as broccoli, scored highest in nutrient density, the study found that beans and starchy vegetables offer the best nutritional value for the money.
Nutrient density was based on fiber, potassium, magnesium and vitamins A, C and K. Fresh, frozen and canned vegetables were found to provide comparable nutritional value.
Affordable nutrition is especially important for the national school lunch program, according to the study, which appeared in the online journal PLOS ONE.