Effect of Chromium Supplementation on Glucose Metabolism and Lipids: A Systematic Review of Randomized Controlled Trials

With interest, we read the systematic review by Balk et al. (1). It reviewed the effect of chromium supplementation on glucose metabolism and lipids. It is important to have an update of the systematic review performed by Althuis et al. (2) in 2002, since many studies have been published in the years thereafter. However, we have some concerns with the conclusions of the current systematic review (1). Althuis et al. (2 …