Effects of Monosodium Glutamate on Objective and Perceived Satiety Among 7- to 9- Year Old Children

Abstract

Background: Monosodium glutamate (MSG) imparts umami taste associated with proteins and is known to act as a flavor-enhancer. Several adult studies and a recent study of infants suggests that MSG may also have beneficial effects on appetite by promoting satiety. This research is the first to assess effects of MSG on perceived and objective satiety among children. Methods: A between-subjects design (MSG+ or MSG-) was used to evaluate the effect of adding MSG to a soup pre-load on subsequent satiety among children aged 7-9 years. Children were randomly assigned to experimental condition (MSG+ or MSG-). Perceived hunger and fullness were evaluated prior to and following consumption of the pre-load using a Visual Analogue Scale (VAS). Objective satiety was assessed using weighed food intake methods at an ad libitum meal following the preload. Results: Children in the MSG+ condition showed greater decreases in perceived hunger following the consumption of the pre-load than children in the MSG- condition (F=4.05, p<0.05). Total energy intake at the ad libitum meal did not vary by MSG condition. Conclusions: The results of this study provide evidence that MSG may reduce perceived hunger among 7- to 9- year old children.