Researchers at Cincinnati Children's Hospital Medical Center tracked 325 preschool children for four years, recording their food types and calories, calcium intake, height, weight, activity levels, and time spent watching television.
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The results showed that eating more dark green and dark yellow vegetables helped children reduce body fat and increase bone density the most. Researchers speculate that the high content of alkaline minerals (such as potassium) in these vegetables may aid bone development. Additionally, researchers do not recommend eating too much processed meat, mainly because of its high sodium and fat content. Although it can increase bone density, it also increases body fat.