Sugar rush or sugar crash? A meta-analysis of carbohydrate effects on mood
Mantantzis K, Schlaghecken F, Sunram-Lea SI, Maylor EA
Published in Neuroscience & Biobehavioral Reviews
Methodology
Meta-analysis of 31 studies with 1259 participants examining carbohydrate administration and subsequent mood and fatigue.
Key Findings
Carbohydrate intake did not improve any aspect of mood and was associated with greater fatigue and lower alertness within the first hour after consumption.
Conclusions
The idea of a sugar-driven energy boost is not supported; carbohydrate loads increase fatigue and can worsen the afternoon slump.
Limitations
Heterogeneous doses and mood instruments; laboratory settings; limited data beyond 60 minutes.
Supplements Studied
Carbohydrate intake did not improve mood and increased fatigue within the first hour, undermining claims of a dietary energy boost.
Outcomes Measured
Carbohydrate intake was associated with greater fatigue and lower alertness within the first hour after consumption.
Related Health Concerns
Study Details
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