Tonelli M, et al. - Researchers investigated if abnormalities of concentrations of essential trace elements are associated with poor outcomes in hemodialysis patients. Using adjusted logistic regression, they assessed the link between trace element status and four outcomes (death, cardiovascular events, systemic infection, and hospitalization). They found that lower levels of zinc or manganese and higher concentrations of lead, arsenic, or mercury were not related to higher risk of clinical outcomes. They did find a strong and independent link between lower concentrations of selenium and the risks of death and hospitalization.