Fructose decreases physical activity and increases body fat without affecting hippocampal neurogenesis and learning relative to an isocaloric glucose diet

Catarina Rendeiro, Ashley M. Masnik, Jonathan G. Mun, Kristy Du, Diana Clark, Ryan N. Dilger, Anna C. Dilger, Justin S. Rhodes

Research output: Contribution to journalArticle

Abstract

Recent evidence suggests that fructose consumption is associated with weight gain, fat deposition and impaired cognitive function. However it is unclear whether the detrimental effects are caused by fructose itself or by the concurrent increase in overall energy intake. In the present study we examine the impact of a fructose diet relative to an isocaloric glucose diet in the absence of overfeeding, using a mouse model that mimics fructose intake in the top percentile of the USA population (18% energy). Following 77 days of supplementation, changes in body weight (BW), body fat, physical activity, cognitive performance and adult hippocampal neurogenesis were assessed. Despite the fact that no differences in calorie intake were observed between groups, the fructose animals displayed significantly increased BW, liver mass and fat mass in comparison to the glucose group. This was further accompanied by a significant reduction in physical activity in the fructose animals. Conversely, no differences were detected in hippocampal neurogenesis and cognitive/motor performance as measured by object recognition, fear conditioning and rotorod tasks. The present study suggests that fructose per se, in the absence of excess energy intake, increases fat deposition and BW potentially by reducing physical activity, without impacting hippocampal neurogenesis or cognitive function.

Original languageEnglish (US)
Article number9589
JournalScientific reports
Volume5
DOIs
StatePublished - Apr 20 2015

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Neurogenesis
Fructose
Adipose Tissue
Learning
Diet
Glucose
Fats
Energy Intake
Cognition
Body Weight
Body Weight Changes
Weight Gain
Fear
Liver
Population

ASJC Scopus subject areas

  • General

Cite this

Fructose decreases physical activity and increases body fat without affecting hippocampal neurogenesis and learning relative to an isocaloric glucose diet. / Rendeiro, Catarina; Masnik, Ashley M.; Mun, Jonathan G.; Du, Kristy; Clark, Diana; Dilger, Ryan N.; Dilger, Anna C.; Rhodes, Justin S.

In: Scientific reports, Vol. 5, 9589, 20.04.2015.

Research output: Contribution to journalArticle

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