Next to calcium, phosphorus is the most abundant mineral in the body. These 2 important nutrients work closely together to build strong bones and teeth. About 85% of the body's phosphorus is in bones and teeth.Phosphorous is also present in smaller amounts in cells and tissues throughout the body.Phosphorus helps filter out waste in the kidneys and plays an essential role in how the body stores and uses energy. It also helps reduce muscle pain after a hard workout.hen there is more phosphorus than calcium in the body, the body will use calcium stored in bones. This can cause osteoporosis (brittle bones) and lead to gum and teeth problems. A balance of dietary calcium and phosphorus can lower the risk of osteoporosis.