Use of calcium should be the subject of further studies, Bjelakovic said.
Another expert, Samantha Heller, a dietitian and clinical nutrition coordinator at the Center for Cancer Care at Griffin Hospital in Derby, Conn., added that "while some vitamin and mineral supplements are beneficial in certain instances, we cannot undo the deleterious health effects of a chronically poor diet with a pill."
It is best to get healthy compounds from a diet rich in vegetables, fruits, legumes, nuts, seeds and whole grains, Heller said. "A supplement should be just that -- a supplement to a healthy diet, not in place of a healthy diet."
For more information on dietary supplements, visit the U.S. National Library of Medicine.
SOURCES: Jaakko Mursu, Ph.D., nutritional epidemiologist, University of Eastern Finland, Kuopio, Finland; Goran Bjelakovic, M.D., D.M.Sc., University of Nis, Serbia; Samantha Heller, M.S., R.D., dietitian, nutritionist, exercise physiologist and clinical nutrition coordinator, Center for Cancer Care, Griffin Hospital, Derby, Conn.; Duffy MacKay, N.D., vice president, Scientific and Regulatory Affairs, Council for Responsible Nutrition, Washington, D.C.; Oct. 10, 2011, Archives of Internal Medicine
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