Chatterjee R, et al. - This pilot study was performed to investigate the effects of potassium chloride (KCl) supplements, at a commonly prescribed dose, on measures of potassium and glucose metabolism. At a dose of 40 mEq/d, KCl did not increase serum potassium significantly. However, KCl prevented worsening of fasting glucose despite weight gain. In larger sample sizes, additional studies, as well as with interventions to increase serum potassium more than was achieved with the intervention, were shown to definitively test this potentially safe and inexpensive approach to reducing diabetes risk.