DOI: 10.2337/dc07-1015 © 2007 by the American Diabetes Association
Effect of Chromium Supplementation on Glucose Metabolism and Lipids: A Systematic Review of Randomized Controlled TrialsResponse to Balk et al.
1 Diabetes Centre, Isala Clinics, Zwolle, the Netherlands Address correspondence to Nanne Kleefstra, MD, Langerhans Foundation, Diabetes Centre, Isala Clinics, Sophia Location, P.O. Box 10400, 8000 GK Zwolle, Netherlands. E-mail: kleefstra@langerhans.com
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).
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