Trial reportEuropean journal of clinical nutrition2014
Comparative effect of two Mediterranean diets versus a low-fat diet on glycaemic control in individuals with type 2 diabetes.
Trial report in European journal of clinical nutrition, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 63 papers, 10 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
63 citing papers in PubMed, 10 syntheses or guidelines pooled it, 181 citations in OpenAlex.
- Mediterranean diet enriched with olive oil shows no consistent benefits on cardiometabolic and anthropometric parameters: a systematic review with meta-analysis of randomized controlled trials.European journal of nutrition · 2024Pooled it
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- The Effect of the Mediterranean Diet on Metabolic Health: A Systematic Review and Meta-Analysis of Controlled Trials in Adults.Nutrients · 2020Pooled it
- Improving type 2 diabetes mellitus glycaemic control through lifestyle modification implementing diet intervention: a systematic review and meta-analysis.European journal of nutrition · 2020Pooled it
- [Olive Oil and Body Weight. Systematic Review and Meta-Analysis of Randomized Controlled Trials].Revista espanola de salud publica · 2018Pooled it
- Pooled it
- Pooled it
- Effects of Mediterranean-style diet on glycemic control, weight loss and cardiovascular risk factors among type 2 diabetes individuals: a meta-analysis.European journal of clinical nutrition · 2015Pooled it
- Effect of tree nuts on glycemic control in diabetes: a systematic review and meta-analysis of randomized controlled dietary trials.PloS one · 2014Pooled it
- Weight management in young adults with type 1 diabetes: The advancing care for type 1 diabetes and obesity network sequential multiple assignment randomized trial pilot results.Diabetes, obesity & metabolism · 2023Trial
- Trial
- Differential effects of a combination of Hibiscus sabdariffa and Lippia citriodora polyphenols in overweight/obese subjects: A randomized controlled trial.Scientific reports · 2019Trial
- A Mediterranean-style eating pattern with lean, unprocessed red meat has cardiometabolic benefits for adults who are overweight or obese in a randomized, crossover, controlled feeding trial.The American journal of clinical nutrition · 2018Trial
- Palaeolithic diet decreases fasting plasma leptin concentrations more than a diabetes diet in patients with type 2 diabetes: a randomised cross-over trial.Cardiovascular diabetology · 2016Trial
- Ultra-processed foods and dietary habits of oncology patients: Risk factor or survival strategy.World journal of clinical oncology · 2025Review
- Ingesting Nuts Can Regulate Adipokines Expression in Individuals Living with Overweight and Obesity: A Narrative Review of What Is Known So Far.Nutrients · 2025Review
- The effects of the mediterranean diet supplemented with olive oils on pro-inflammatory biomarkers and soluble adhesion molecules: a systematic review and meta-analysis of randomized controlled trials.Nutrition & metabolism · 2025Review
- Relationship of visfatin with obesity and osteoporosis in patients with inflammatory bowel disease: a narrative review.Frontiers in immunology · 2025Review
- Comparison of the Effect of Intermittent Fasting with Mediterranean Diet on Glycemic, Lipid, and Anthropometric Indices in Type 2 Diabetes: A Review of Randomized Controlled Trials.Current hypertension reviews · 2025Review
3 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND/
objectivesAlthough benefits have been attributed to the Mediterranean diet, its effect on glycaemic control has not been totally elucidated. The aim of this work was to compare the effect of two Mediterranean diets versus a low-fat diet on several parameters and indices related to glycaemic control in type 2 diabetic subjects. SUBJECTS/
methodsA multicentric parallel trial was conducted on 191 participants (77 men and 114 women) of the PREDIMED study in order to compare three dietary interventions: two Mediterranean diets supplemented with virgin olive oil (n=67; body mass index (BMI)=29.4±2.9) or mixed nuts (n=74; BMI=30.1±3.1) and a low-fat diet (n=50; BMI=29.8±2.8). There were no drop-outs. Changes in body weight and waist circumference were determined. Insulin resistance was measured by HOMA-IR index, adiponectin/leptin and adiponectin/HOMA-R ratios after 1 year of follow-up.
resultsIncreased values of adiponectin/leptin ratio (P=0.043, P=0.001 and P<0.001 for low-fat, olive oil and nut diets, respectively) and adiponectin/HOMA-IR ratio (P=0.061, P=0.027 and P=0.069 for low-fat, olive oil and nut diets, respectively) and decreased values of waist circumference (P=0.003, P=0.001 and P=0.001 for low-fat, olive oil and nut diets, respectively) were observed in the three groups. In both Mediterranean diet groups, but not in the low-fat diet group, this was associated with a significant reduction in body weight (P=0.347, P=0.003 and P=0.021 for low-fat, olive oil and nut diets, respectively).
conclusionsMediterranean diets supplemented with virgin olive oil or nuts reduced total body weight and improved glucose metabolism to the same extent as the usually recommended low-fat diet.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.