Cited by 848Diet and metabolism studiesDietary Effects on HealthNutritional Studies and Diet

Diets with high or low protein content and glycemic index for weight-loss maintenance

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Larsen, Thomas Meinert, Dalskov, Stine-Mathilde, van Baak, Marleen, Jebb, Susan A., Papadaki, Angeliki, Pfeiffer, Andreas F.H., Martinez, J. Alfredo, Handjieva-Darlenska, Teodora +6 more·2010·New England Journal of Medicine

Abstract

BACKGROUND: Studies of weight-control diets that are high in protein or low in glycemic index have reached varied conclusions, probably owing to the fact that the studies had insufficient power. METHODS: We enrolled overweight adults from eight European countries who had lost at least 8% of their initial body weight with a 3.3-MJ (800-kcal) low-calorie diet. Participants were randomly assigned, in a two-by-two factorial design, to one of five ad libitum diets to prevent weight regain over a 26-week period: a low-protein and low-glycemic-index diet, a low-protein and high-glycemic-index diet, a high-protein and low-glycemic-index diet, a high-protein and high-glycemic-index diet, or a control diet. RESULTS: A total of 1209 adults were screened (mean age, 41 years; body-mass index [the weight in kilograms divided by the square of the height in meters], 34), of whom 938 entered the low-calorie-diet phase of the study. A total of 773 participants who completed that phase were randomly assigned to one of the five maintenance diets; 548 completed the intervention (71%). Fewer participants in the high-protein and the low-glycemic-index groups than in the low-protein-high-glycemic-index group dropped out of the study (26.4% and 25.6%, respectively, vs. 37.4%; P=0.02 and P=0.01 for the respective comparisons). The mean initial weight loss with the low-calorie diet was 11.0 kg. In the analysis of participants who completed the study, only the low-protein-high-glycemic-index diet was associated with subsequent significant weight regain (1.67 kg; 95% confidence interval [CI], 0.48 to 2.87). In an intention-to-treat analysis, the weight regain was 0.93 kg less (95% CI, 0.31 to 1.55) in the groups assigned to a high-protein diet than in those assigned to a low-protein diet (P=0.003) and 0.95 kg less (95% CI, 0.33 to 1.57) in the groups assigned to a low-glycemic-index diet than in those assigned to a high-glycemic-index diet (P=0.003). The analysis involving participants who completed the intervention produced similar results. The groups did not differ significantly with respect to diet-related adverse events. CONCLUSIONS: In this large European study, a modest increase in protein content and a modest reduction in the glycemic index led to an improvement in study completion and maintenance of weight loss. (Funded by the European Commission; ClinicalTrials.gov number, NCT00390637.).

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Crossref · 10.1056/nejmoa1007137

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  • Compliance is known to increase when the foods are provided.

    “However, compliance is known to increase when the foods are provided [34,48,56,64,66]”

    From Are Dietary Proteins the Key to Successful Body Weight Management? A Systematic Review and Meta-Analysis of Studies Assessing Body Weight Outcomes after Interventions with Increased Dietary Protein (2021) · cites this paper as [64]

    The Methods (Weight-Maintenance Phase; page unavailable) say that two centers provided free foods specifically to assess the effect of food provision on adherence. The passages from our copy do not report that providing foods increased adherence compared with instruction alone, so the claimed increase is not established by this paper. (LLM, conf=0.79)

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  • High-protein diets have received particular attention due to their potential to enhance satiety, preserve lean body mass, and attenuate adaptive reductions in resting energy expenditure that accompany weight loss.

    “high-protein diets have received particular attention due to their potential to enhance satiety, preserve lean body mass, and attenuate adaptive reductions in resting energy expenditure that accompany weight loss”

    From Weight maintenance after discontinuation of GLP-1 therapies (2026) · cites this paper as [59]

    The introductory passage following the Abstract Conclusions says high protein content may have satiating effects and that interest in high-protein diets is increasing. The Discussion reports better weight-loss maintenance with high-protein diets, but no passage establishes preservation of lean body mass or attenuation of reductions in resting energy expenditure. The Discussion also reports no detected difference in self-perceived satiety. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • Higher-protein diets may help maintain weight loss, especially when the overall diet has a low glycemic index.

    “Diets with higher protein may also offer benefits for maintaining weight loss58, particularly when the overall diet has a low glycemic index59.”
  • In the DIOGENES study, higher protein intake was associated with reduced weight regain but absolute differences between dietary groups were small (approximately 0.9 kg less regain over 26 weeks compared to lower protein intake, following an initial ~11 kg weight loss).

    “higher protein intake was associated with reduced weight regain but absolute differences between dietary groups were small (approximately 0.9 kg less regain over 26 weeks compared to lower protein intake, following an initial ∼11 kg weight loss)”

    From Weight maintenance after discontinuation of GLP-1 therapies (2026) · cites this paper as [59]

  • One large RCT of high-protein diet suggested benefit for weight loss maintenance, increasing satiety and energy expenditure, albeit for a maintenance phase of only 6 months after completing weight loss.

    “One large RCT of high-protein diet suggested benefit for weight loss maintenance, increasing satiety and energy expenditure, albeit for a maintenance phase of only 6 months after completing weight loss [64].”

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Authors
Larsen, T. M., Dalskov, S.-M., van Baak, M., Jebb, S. A., Papadaki, A., Pfeiffer, A. F. H., Martinez, J. A., Handjieva-Darlenska, T., Kunešová, M., Pihlsgård, M., Stender, S., Holst, C., Saris, W. H. M., & Astrup, A.
Affiliations
  • University of Copenhagen (DK)
  • MRC Elsie Widdowson Laboratory (GB)
  • University of Crete (GR)
  • German Institute of Human Nutrition (DE)
  • Institute of Endocrinology (CZ)
  • Copenhagen University Hospital (DK)
  • Maastricht University Medical Centre (NL)
Venue
New England Journal of Medicine
Published
2010-11-25
Volume
363
Issue
22
Pages
2102-2113
ISSN
  • 0028-4793 (ISSN-L)
  • 1533-4406
OpenAlex
W2167868973
Cited by
843
References
23
Citations by year
2026: 13 · 2025: 20 · 2024: 39 · 2023: 38 · 2022: 29 · 2021: 58 · 2020: 53 · 2019: 47 · 2018: 50 · 2017: 54 · 2016: 52 · 2015: 77 · 2014: 80 · 2013: 84 · 2012: 89
FWCI
50.03
Type
journal article
Language
en
Open access
Locations
  • New England Journal of Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • Research Publications (Maastricht University) (publishedVersion, other-oa)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (submittedVersion)
  • Deposito Adademico Digital Universidad De Navarra (University of Navarra) (submittedVersion, other-oa)
  • Bristol Research (University of Bristol) (submittedVersion)
  • Explore Bristol Research (submittedVersion)
  • Research Publications (Maastricht University) (submittedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Diet and metabolism studies
  • Health Sciences › Medicine › Physiology › Dietary Effects on Health
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Nutritional Studies and Diet
Keywords
high-protein diet, low glycemic index diet, weight loss maintenance, weight regain prevention, hypocaloric diet, overweight adults, glycemic index, protein intake, dropout rates, weight loss sustainability, intention-to-treat analysis, body mass index
MeSH terms
Adult, Diet, Reducing, Dietary Proteins, Humans, Obesity, Patient Compliance, Biomarkers, Weight Loss, Abdominal Pain, Body Mass Index, Diet, Protein-Restricted, Glycemic Index, Overweight, Diet, Carbohydrate-Restricted, Intention to Treat Analysis

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