PS to my last post
I saw this in the University of Maryland Medical website:
Having too much phosphorus in the body is actually more common and more worrisome than having too little. Too much phosphorus is generally caused by kidney disease or by consuming too much dietary phosphorus and not enough dietary calcium. As the amount of phosphorus you eat rises, so does the need for calcium. The delicate balance between calcium and phosphorus is necessary for proper bone density and prevention of osteoporosis.
Phosphates (phosphorus) are used clinically to treat the following:
Hypophosphatemia, low levels of phosphorus in the body
Hypercalcemia, high blood calcium levels
Calcium-based kidney stones
These conditions require a doctor's care.
Most people get plenty of phosphorus in their diets. Sometimes athletes use phosphate supplements before competitions or heavy workouts to help reduce muscle pain and fatigue, although it's not clear how much it helps or if it improves performance.
Protein-rich foods, such as meat, poultry, fish, eggs, dairy products, nuts, and legumes, are good sources of phosphorus. Other sources include whole grains, hard potatoes, dried fruit, garlic cloves, and carbonated beverages.