Research
Hormonal
Short-term carbohydrate deficiency (50% deficit for 5 days) reduces fasting hepatic glucose production (HGP) and improves the sensitivity of HGP to suppression by insulin, leading to increased fat oxidation.
Reducing carbohydrate intake for several days lowers your liver's glucose output and makes your body more sensitive to insulin. This metabolic shift encourages your body to burn fat for energy instead of glucose.
GoodSupportsHIGH confidence
Conversely, improved sensitivity of HGP to suppression by insulin was documented in response to 5 d of deficient CHO energy intake, since HGP was reduced despite reductions in serum insulin concentrations.
Why this rating
Controlled metabolic ward study.
Source
Short-term alterations in carbohydrate energy intake in humans. Striking effects on hepatic glucose production, de novo lipogenesis, lipolysis, and whole-body fuel selection.
Jean‐Marc Schwarz et al. · Journal of Clinical Investigation · 1995
DOI 10.1172/jci118342
crossover · n=6Cited 240×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Short-term surplus carbohydrate intake (50% excess for 5 days) significantly increases fasting hepatic glucose production (HGP) and serum insulin levels, creating a state of insulin resistance that suppresses lipolysis and shifts whole-body fuel selection toward carbohydrate oxidation and away from fat oxidation.Good
- Fractional hepatic de novo lipogenesis (DNL) is a sensitive and specific biomarker for recent carbohydrate intake, increasing more than 10-fold on surplus carbohydrate diets and becoming unmeasurable on carbohydrate-deficient diets, even though absolute fat synthesis remains low.Good
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