Cited by 593Gut microbiota and healthNutritional Studies and DietNutrition, Genetics, and Disease

Mediterranean diet intervention in overweight and obese subjects lowers plasma cholesterol and causes changes in the gut microbiome and metabolome independently of energy intake

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Meslier, Victoria, Laiola, Manolo, Roager, Henrik Munch, De Filippis, Francesca, Roume, Hugo, Quinquis, Benoit, Giacco, Rosalba, Mennella, Ilario +8 more·2020·Gut

Abstract

Objectives This study aimed to explore the effects of an isocaloric Mediterranean diet (MD) intervention on metabolic health, gut microbiome and systemic metabolome in subjects with lifestyle risk factors for metabolic disease. Design Eighty-two healthy overweight and obese subjects with a habitually low intake of fruit and vegetables and a sedentary lifestyle participated in a parallel 8-week randomised controlled trial. Forty-three participants consumed an MD tailored to their habitual energy intakes (MedD), and 39 maintained their regular diets (ConD). Dietary adherence, metabolic parameters, gut microbiome and systemic metabolome were monitored over the study period. Results Increased MD adherence in the MedD group successfully reprogrammed subjects’ intake of fibre and animal proteins. Compliance was confirmed by lowered levels of carnitine in plasma and urine. Significant reductions in plasma cholesterol (primary outcome) and faecal bile acids occurred in the MedD compared with the ConD group. Shotgun metagenomics showed gut microbiome changes that reflected individual MD adherence and increase in gene richness in participants who reduced systemic inflammation over the intervention. The MD intervention led to increased levels of the fibre-degrading Faecalibacterium prausnitzii and of genes for microbial carbohydrate degradation linked to butyrate metabolism. The dietary changes in the MedD group led to increased urinary urolithins, faecal bile acid degradation and insulin sensitivity that co-varied with specific microbial taxa. Conclusion Switching subjects to an MD while maintaining their energy intake reduced their blood cholesterol and caused multiple changes in their microbiome and metabolome that are relevant in future strategies for the improvement of metabolic health.

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Crossref · 10.1136/gutjnl-2019-320438

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  • Greater microbial diversity and higher abundance of health-promoting bacterial taxa are associated with consumption of the Mediterranean diet.

    “Greater microbial diversity as well as higher abundance of health-promoting bacterial taxa (i.e., Clostridium cluster XIVa, F. prausnitzii, Roseburia, Eubacterium, B. thetaiotaomicron, Parabacteroides distasonis, Bifidobacterium adolescentis, and Bifidobacterium longum) have been associated with consumption of the Mediterranean diet (38)(39)(40).”
  • More recent human intervention studies support a beneficial impact of a Mediterranean diet on microbiota profiles.

    “More recent human intervention studies also support the beneficial impact of a Mediterranean diet on microbiota profiles.”
  • Adherence to a Mediterranean diet is linked to beneficial microbiota-related metabolomic profiles, such as increased SCFAs and reductions in BCFAs, bile acids, and TMAO.

    “Additionally, adherence to a Mediterranean diet was linked to beneficial microbiota-related metabolomic profiles, such as increased levels of SCFAs and reductions in BCFAs, bile acids, and trimethylamine N-oxide (TMAO) (38,40,41).”

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Authors
Meslier, V., Laiola, M., Roager, H. M., De Filippis, F., Roume, H., Quinquis, B., Giacco, R., Mennella, I., Ferracane, R., Pons, N., Pasolli, E., Rivellese, A., Dragsted, L. O., Vitaglione, P., Ehrlich, S. D., & Ercolini, D.
Affiliations
  • Université Paris-Saclay (FR)
  • University of Naples Federico II (IT)
  • University of Copenhagen (DK)
  • Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy
  • Université Paris-Saclay, INRAE, MGP, Jouy-en-Josas, France
  • Institute of Food Science (IT)
  • Federico II University Hospital (IT)
Corresponding author
Ercolini, Danilo
Venue
Gut
Publisher
BMJ
Published
2020-02-19
Volume
69
Issue
7
Pages
1258-1268
ISSN
  • 0017-5749 (ISSN-L)
  • 1468-3288
OpenAlex
W3007138124
Cited by
583
References
69
Citations by year
2026: 67 · 2025: 116 · 2024: 118 · 2023: 87 · 2022: 85 · 2021: 73 · 2020: 36 · 2018: 1
FWCI
23.17
Type
journal article
Language
en
Open access
Locations
  • Gut (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (publishedVersion, cc-by-nc)
  • HighWire Press Open Archive (submittedVersion)
  • INFM-OAR (INFN Catania) (submittedVersion, cc-by-nc)
Funders
  • Agence Nationale de la Recherche (ANR-11-DPBS-0001, ANR-15-HDIM-0002)
  • Agria Djurförsäkring
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Nutritional Studies and Diet
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Nutrition, Genetics, and Disease
Keywords
Mediterranean diet, overweight, obesity, serum cholesterol, gut microbiota, metabolome, isocaloric diet, dietary adherence, Faecalibacterium prausnitzii, butyrate metabolism, bile acids, urolithins, insulin sensitivity, systemic inflammation, dietary fiber, L-carnitine, metabolic health
MeSH terms
Gastrointestinal Microbiome, Adult, Energy Intake, Cholesterol, Female, Humans, Male, Obesity, Diet, Mediterranean, Overweight, Metabolome

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