The investigators conducted a randomized trial of an intervention to increase water consumption among school aged children in Germany. Schools were randomly assigned to receive a new water fountain, each child received their own water bottle, and educational programs were introduce to promote water consumption. Almost a year later, the children in the intervention arm were no fatter than a year before but children in the control schools were more likely to report being overweight. In total, the risk of being overweight was reduced by a whopping 31% (!). Children in the intervention arm reported drinking more water, but interestingly no difference in the consumption of other beverages, it appears that the water was in addition to other beverages. Huh?
Really fascinating. I would not believe it had the experimental design not seem to be so clean. Perhaps the sample was small, which could explain these results as the finding was just statistically significant, or perhaps it really worked. Excuse me while I go and get a glass of water.Share on Facebook