Research
Energy balance
When ingested together, fructose and glucose are oxidized significantly faster (mean 66.0%) than when either sugar is consumed alone, indicating a synergistic metabolic interaction.
If you are consuming carbohydrates, combining glucose and fructose (e.g., via sucrose or mixed sources) allows your body to oxidize them more efficiently than consuming them separately. This is particularly relevant for athletes or those needing rapid energy replenishment.
GoodSupportsHIGH confidence
When fructose and glucose are ingested in combination, either as fructose plus glucose, as sucrose, or as sucrose plus one of the 2 mono-sugars, the mean oxidized amount of the mixed sugars increased to 66.0% ± 8.2 (mean ± SD, range 52.2-73.6%).
Why this rating
Based on a review of multiple isotope tracer studies, though heterogeneity exists.
Source
Fructose metabolism in humans – what isotopic tracer studies tell us
Sam Z. Sun et al. · Nutrition & Metabolism · 2012
DOI 10.1186/1743-7075-9-89
narrative_reviewCited 305×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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