Phosphorus is widely recognized for its role in keeping soil fertile and productive, but similar to plants, the human body also relies on phosphorus for proper function. It is an essential element of bones, teeth, and cell membranes. In addition, phosphorus supports the body’s ability to generate energy (ATP). Its levels in the body are tightly managed by the kidneys, bones, and intestines. A variety of foods provide phosphorus naturally, with the highest amounts found in dairy, meat, poultry, seafood, legumes, and nuts.