“…Because most fluid replacement options are hypotonic, they remain inadequate replacement for solute loss At the 2016 London Marathon, change in serum sodium was inversely correlated with change in body mass and estimated fluid intake. 13 Previous studies have shown concern that NSAIDs can increase the risk of developing EAH. 8 In our study, although not significant, we found that slower, first time runners used more NSAIDs within the week leading up to marathon when compared with their faster counterparts.…”