Research
Hormonal
Low-glycemic index (GI) diets do not provide a significant benefit for long-term weight control or body fat reduction compared to high-GI diets when energy density and palatability are matched.
Do not rely on glycemic index labels for weight loss. Focus on eating whole, fiber-rich carbohydrates like vegetables, fruits, and whole grains instead of trying to calculate the GI of your meals.
GoodRefutesHIGH confidence
Well-controlled randomized trials of high quality have also failed to find any effect of a high vs low GI diet on body weight and body fat.
Why this rating
Based on well-controlled randomized trials and systematic reviews.
Source
Dietary Management of Obesity
Arne Astrup · Journal of Parenteral and Enteral Nutrition · 2008
DOI 10.1177/0148607108321707
narrative_reviewCited 42×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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