According to research appearing in the European Journal of Clinical Nutrition ((2007) 61, 54–60. doi:10.1038/sj.ejcn.1602475; published online 21 June 2006), magnesium supplementation to be of benefit to children with asthma. A randomized, placebo-controlled study appearing in the Journal of Asthma (2010; 47(1): 83-92) looked at 55 subjects who were randomly divided into two groups and given either a placebo or 340 mg of magnesium per day over a 6 1/2 month period. The researchers found that the subjects who received the magnesium were much more resistant to the methacoline challenge and also had great improvements on their pulmonary function tests. The magnesium group scored higher on the quality of life questionnaires as well. Since there are few, if any, side-effects to magnesium, supplementation may be beneficial to asthmatics.