We briefly review the study “Low serum magnesium levels are associated with increased risk of fractures: a long-term prospective cohort study” in regard to decreasing bone fracture risk by 44%. Citation: Low serum magnesium levels are associated with increased risk of fractures: a long-term prospective cohort study. European Journal of Epidemiology, 2017; DOI: 10.1007/s10654-017-0242-2