Salt intake is related to soft drink consumption in children and adolescents: a link to obesity?

FJ He, NM Marrero, GA MacGregor - Hypertension, 2008 - Am Heart Assoc
FJ He, NM Marrero, GA MacGregor
Hypertension, 2008Am Heart Assoc
Dietary salt is a major determinant of fluid intake in adults; however, little is known about this
relationship in children. Sugar-sweetened soft drink consumption is related to childhood
obesity, but it is unclear whether there is a link between salt and sugar-sweetened soft drink
consumption. We analyzed the data of a cross-sectional study, the National Diet and
Nutrition Survey for young people in Great Britain. Salt intake and fluid intake were assessed
in 1688 participants aged 4 to 18 years, using a 7-day dietary record. There was a significant …
Dietary salt is a major determinant of fluid intake in adults; however, little is known about this relationship in children. Sugar-sweetened soft drink consumption is related to childhood obesity, but it is unclear whether there is a link between salt and sugar-sweetened soft drink consumption. We analyzed the data of a cross-sectional study, the National Diet and Nutrition Survey for young people in Great Britain. Salt intake and fluid intake were assessed in 1688 participants aged 4 to 18 years, using a 7-day dietary record. There was a significant association between salt intake and total fluid, as well as sugar-sweetened soft drink consumption (P<0.001), after adjusting for potential confounding factors. A difference of 1 g/d in salt intake was associated with a difference of 100 and 27 g/d in total fluid and sugar-sweetened soft drink consumption, respectively. These results, in conjunction with other evidence, particularly that from experimental studies where only salt intake was changed, demonstrate that salt is a major determinant of fluid and sugar-sweetened soft drink consumption during childhood. If salt intake in children in the United Kingdom was reduced by half (mean decrease: 3 g/d), there would be an average reduction of ≈2.3 sugar-sweetened soft drinks per week per child. A reduction in salt intake could, therefore, play a role in helping to reduce childhood obesity through its effect on sugar-sweetened soft drink consumption. This would have a beneficial effect on preventing cardiovascular disease independent of and additive to the effect of salt reduction on blood pressure.
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