It is viewed by many magnesium experts that the RDA should be raised. It has been said that approximately 300 mg of magnesium is needed to just offset daily losses. So if you are exposed to stress that is caused by physical or psychological illness, physical injury, athletic physical exertion, or emotional turmoil, your requirement for magnesium escalates. 
 Carolyn Dean, M.D., N.D., ‘The Magnesium Miracle’, (2007: Ballantine Books, New York) p.216
 Mildred S. Seelig, M.D., MPH, “The requirement of magnesium by the normal adult.” Am J Clin Nutr, vol. 14, pp. 342-390, 1964.
 Mildred S. Seelig, M.D., MPH, “Magnesium requirements in human nutrition.” Magnes Bull, vol. 3 (1A), pp. 26-47, 1981.