disorders of nutrition
Vitamin D Excess
Introduction
Taking very high doses ofvitamin Dsupplements can causevitamin Dtoxicity. Vitamin Dtoxicity causes high levels of calcium in the blood. People withvitamin Dtoxicity may lose their appetite, feel nauseated, vomit, and feel weak and nervous. Doctors diagnose the toxicity by measuring levels of calcium andvitamin Din the blood. Treatment involves stoppingvitamin Dsupplements and giving the person fluids and sometimes drugs. (See also Overview of Vitamins .) —for example, 60 to 100 or more times the recommended daily allowance (RDA)—over several months can cause toxicity and a high calcium level in the blood ( Hypercalcemia (High Level of Calcium in the Blood) ). Levels of calcium become high because when levels of More bone is broken down than is reformed. (Normally, bones are continuously broken down and reformed—in a process called remodeling—to adjust to the changing demands placed on them.) As a result, calcium is released from the bone into the bloodstream. More calcium is absorbed from food in the intestine. may be used to treat Psoriasis , 