medications binding phosphate, such as antacids, steroids,
insulin,
and epinephrine; large consummation of alcohol;
and certain disease states, such as, renal failure, hyperparathyroidism, and DKA. Phosphorus is very abundant in our food sources especially in dairy products and meats. An increase in phosphorus foods will increase your Vitamin D and calcium levels, too. If your levels do not increase from increase of foods, then suggest having your MD check medical reasons as examples above.