Dolomite

OTHER NAME(S): Calcaire Dolomitique, Dolomitic Limestone, Dolostone, Calcium magnesium carbonate, Dolomita

Overview

Dolomite is a type of limestone. It is rich in magnesium carbonate and calcium carbonate. It also contains several other minerals.

Dolomite is made of 60% calcium carbonate and 40% magnesium carbonate. However, it might also contain heavy metals, such as lead.

People use dolomite as a source of calcium and magnesium, but there is no good scientific evidence to support this use. It might also be unsafe.

Don't confuse dolomite with calcium or magnesium. These are not the same.

References
  1. Martindale W. Martindale the Extra Pharmacopoeia. Pharmaceutical Press, 1999.
  2. McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
  3. Bourgoin BP, Evans DR, Cornett JR, et al. Lead content in 70 brands of dietary calcium supplements. Am J Public Health 1993;83:1155-60.
  4. Young DS. Effects of Drugs on Clinical Laboratory Tests 4th ed. Washington: AACC Press, 1995.
  5. Meacham SL, Taper LJ, Volpe SL. Effect of boron supplementation on blood and urinary calcium, magnesium, and phosphorus, and urinary boron in athletic and sedentary women. Am J Clin Nutr 1995;61:341-5.
  6. Shils M, Olson A, Shike M. Modern Nutrition in Health and Disease. 8th ed. Philadelphia, PA: Lea and Febiger, 1994.
  7. Roberts HJ. Potential toxicity due to dolomite and bonemeal. South Med J 1983;76:556-9.
  8. Friedman PA, Bushinsky DA. Diuretic effects on calcium metabolism. Semin Nephrol 1999;19:551-6.
  9. Murry JJ, Healy MD. Drug-mineral interactions: a new responsibility for the hospital dietician. J Am Diet Assoc 1991;91:66-73.
  10. Butner LE, Fulco PP, Feldman G, et al. Calcium carbonate-induced hypothyroidism. Ann Intern Med 2000:132:595.
  11. Schneyer CR. Calcium carbonate and reduction of levothyroxine efficacy. JAMA 1998;279:750.
  12. Singh N, Singh PN, Hershman JM. Effect of calcium carbonate on the absorption of levothyroxine. JAMA 2000;283:2822-5.
  13. Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Calcium, Phosphorus, Magnesium, Vitamin D, and Fluoride. Washington, DC: National Academy Press, 1999. Available at: https://books.nap.edu/books/0309063507/html/index.html.
  14. Ryan MP. Diuretics and potassium/magnesium depletion. Directions for treatment. Am J Med 1987;82:38-47..
  15. Hollifield JW. Magnesium depletion, diuretics, and arrhythmias. Am J Med 1987;82:30-7..
  16. Heidenreich O. Mode of action of conventional and potassium-sparing diuretics--aspects with relevance to Mg-sparing effects. Magnesium 1984;3:248-56..
  17. Kahela P, Anttila M, Tikkanen R, Sundquist H. Effect of food, food constituents and fluid volume on the bioavailability of sotalol. Acta Pharmacol Toxicol (Copenh) 1979;44:7-12..
  18. Pletz MW, Petzold P, Allen A, et al. Effect of calcium carbonate on bioavailability of orally administered gemifloxacin. Antimicrob Agents Chemother 2003;47:2158-60..
  19. Scelfo GM, Flegal AR. Lead in calcium supplements. Environ Health Perspect 2000;108:309-19.
  20. Dietary reference intakes for calcium and vitamin D. Institute of Medicine, November 30, 2010. Available at: https://www.iom.edu/~/media/Files/Report%20Files/2010/Dietary-Reference-Intakes-for-Calcium-and-Vitamin-D/Vitamin%20D%20and%20Calcium%202010%20Report%20Brief.pdf.
  21. Selden, A. I., Berg, N. P., Lundgren, E. A., Hillerdal, G., Wik, N. G., Ohlson, C. G., and Bodin, L. S. Exposure to tremolite asbestos and respiratory health in Swedish dolomite workers. Occup.Environ.Med. 2001;58(10):670-677.
  22. Steenkamp, V., Stewart, M. J., Curowska, E., and Zuckerman, M. A severe case of multiple metal poisoning in a child treated with a traditional medicine. Forensic Sci.Int. 8-28-2002;128(3):123-126.
  23. Mizoguchi, T., Nagasawa, S., Takahashi, N., Yagasaki, H., and Ito, M. Dolomite supplementation improves bone metabolism through modulation of calcium-regulating hormone secretion in ovariectomized rats. J.Bone Miner.Metab 2005;23(2):140-146.
  24. Mattos, J. C., Hahn, M., Augusti, P. R., Conterato, G. M., Frizzo, C. P., Unfer, T. C., Dressler, V. L., Flores, E. M., and Emanuelli, T. Lead content of dietary calcium supplements available in Brazil. Food Addit.Contam 2006;23(2):133-139.
  25. Anttila, S., Sutinen, S., Paakko, P., and Finell, B. Rheumatoid pneumoconiosis in a dolomite worker: a light and electron microscopic, and X-ray microanalytical study. Br.J.Dis.Chest 1984;78(2):195-200.
  26. Roberts, R. J. Dolomite as a source of toxic metals. N.Engl.J.Med. 2-12-1981;304(7):423.
  27. Iraji F, Siadat AH. Pityriasis rubra pilaris following exposure to dolomite. J Res Med Sci. 2013;18(7):621-2.
  28. Neghab M, Abedini R, Soltanzadeh A, et al. Respiratory disorders associated with heavy inhalation exposure to dolomite dust. Iran Red Crescent Med J. 2012;14(9):549-57.
  29. Gallagher JC, Jindal PS, Smith LM. Vitamin D does not increase calcium absorption in young women: a randomized clinical trial. J Bone Miner Res. 2014;29(5):1081-7.
  30. Shapses SA, Sukumar D, Schneider SH, et al. Vitamin D supplementation and calcium absorption during caloric restriction: a randomized double-blind trial. Am J Clin Nutr. 2013;97(3):637-45.