Cited by 207Nutritional Studies and DietDiet and metabolism studiesDietary Effects on Health

The DOI matches its Crossref record; 153 of the 153 references it cites were found in a registry or an index; none of the 63 sources its claims cite is checked for support yet.

Mediterranean Diet and Obesity-related Disorders: What is the Evidence?

Open access

Abstract

Purpose of Review: Obesity is a chronic disease, a major public health problem due to its association with non-communicable diseases and all-cause mortality. Indeed, people with obesity are at increased risk for a variety of obesity-related disorders including hypertension, dyslipidemia, type 2 diabetes mellitus, cardiovascular disease, and several cancers. Many popular diets with very different macronutrient composition, including the Mediterranean diet (MD), have been used, proposed, and studied for prevention and management of obesity. In particular, MD has been the subject of countless studies over the years and now boasts a large body of scientific literature. In this review, we aimed to update current knowledge by summarizing the most recent evidence on the effect of MD on obesity and obesity-related disorders. Recent Findings: The negative effects of obesity are partly reversed by substantial weight loss that can be achieved with MD, especially when low-calorie and in combination with adequate physical activity. In addition, the composition of MD has been correlated with an excellent effect on reducing dyslipidemia. It also positively modulates the gut microbiota and immune system, significantly decreasing inflammatory mediators, a common ground for many obesity-related disorders. Summary: People with obesity are at increased risk for a variety of medical disorders including hypertension, dyslipidemia, type 2 diabetes mellitus, and cardiovascular disease. Therefore, there is an inevitable need for measures to manage obesity and its related disorders. At this point, MD has been proposed as a valuable nutritional intervention. It is characterized by a high consumption of vegetables, fruit, nuts, cereals, whole grains, and extra virgin olive oil, as well as a moderate consumption of fish and poultry, and a limited intake of sweets, red meat, and dairy products. MD proves to be the healthiest dietary pattern available to tackle obesity and prevent several non-communicable diseases, including cardiovascular disease and type 2 diabetes.

Overview

AI snapshot

Written from the paper’s full text.

TL;DR

This narrative review summarizes evidence that the Mediterranean diet (MD) helps manage obesity and obesity-related disorders, especially when energy-restricted and combined with physical activity, and is associated with improved type 2 diabetes, dyslipidemia, cardiovascular outcomes, and some cancers. MD also favorably modulates gut microbiota and immune/inflammatory pathways, though the authors note further research is needed for several associations.

Key findings

  • MD is effective for weight loss, particularly with energy restriction and exercise: a meta-analysis of 16 RCTs (n = 3436) found greater weight loss versus control diets, with larger effects when energy restriction (mean difference −3.88 kg; 95% CI −6.54 to −1.21), increased physical activity (−4.01 kg; 95% CI −5.79 to −2.23), or follow-up >6 months (−2.69 kg; 95% CI −3.99 to −1.38) were included. In PREDIMED (n = 7447), ad libitum MD did not significantly change body weight versus low-fat diet, but MD with nuts reduced waist circumference (−0.923 cm; 95% CI −1.604 to −0.241; p = 0.008).
  • MD is associated with lower type 2 diabetes risk and improved glycemic control: prior meta-analyses reported 19–23% prevention, and in the Women’s Health Study (n = 25,317) higher MD intake was related to a 30% relative risk decrease over 20 years. In a network meta-analysis of 10 RCTs (n = 921 patients with type 2 diabetes), MD was superior to low-fat diet for HbA1c (−0.45%; 95% CI −0.55 to −0.34), fasting plasma glucose (−1.24 mmol/L; 95% CI −1.57 to −0.91), weight (−1.18 kg; 95% CI −1.99 to −0.37), waist circumference (−0.73 cm; 95% CI −1.26 to −0.19), triglycerides (−0.21 mmol/L; 95% CI −0.27 to −0.16), and HDL-C (+0.07 mmol/L; 95% CI 0.04 to 0.11).
  • MD is linked to lower cardiovascular and cancer risks: a meta-analysis of 38 cohort studies and 3 RCTs in diabetes found lower CHD (RR 0.73; 95% CI 0.62 to 0.86), MI (RR 0.73; 95% CI 0.61 to 0.88), stroke (RR 0.80; 95% CI 0.71 to 0.90), and total CVD death (RR 0.79; 95% CI 0.77 to 0.82). A cancer meta-analysis including 2,130,753 participants found lower cancer mortality (RR 0.86; 95% CI 0.81 to 0.91), colorectal cancer (RR 0.82; 95% CI 0.75 to 0.88), breast cancer (RR 0.92; 95% CI 0.87 to 0.96), gastric cancer (RR 0.72; 95% CI 0.60 to 0.86), liver cancer (RR 0.58; 95% CI 0.46 to 0.73), head and neck cancer (RR 0.49; 95% CI 0.37 to 0.66), and prostate cancer (RR 0.96; 95% CI 0.92 to 1.00).
  • MD favorably affects dyslipidemia and inflammation: the review reports that MD composition is correlated with excellent effects on reducing dyslipidemia and that it positively modulates gut microbiota and the immune system, significantly decreasing inflammatory mediators common to many obesity-related disorders.

Methods

  • Design: narrative review aimed at updating current knowledge on the effect of MD on obesity and obesity-related disorders; no systematic review protocol, search strategy, or formal quality assessment is reported in the text.
  • Data/sample: synthesizes evidence from RCTs, meta-analyses, prospective cohort studies, and cross-sectional studies, including major trials and cohorts such as PREDIMED, EPIC, the Women’s Health Study, and others; tables summarize meta-analyses of MD effects on obesity-associated disorders.
  • Analysis: narrative synthesis of reported effect estimates, confidence intervals, and mechanistic findings; no new primary data are presented.

Limitations

  • The paper states that further research is needed to establish the effects of MD on cardiovascular morbidity and mortality in patients with type 2 diabetes, to clarify the link between MD and diabetic neuropathy, and to determine which foods and nutrients are most effective for cancer outcomes; it also notes it remains unclear whether MD is more effective than other dietary interventions for reducing central adiposity.
  • Evident from the text: as a narrative review, it does not report a systematic search, inclusion criteria, or risk-of-bias assessment, so the evidence base is heterogeneous and conclusions rely on varied study designs and populations.
  • Evident from the text: some cited findings come from small or short-term studies (e.g., n = 11 crossover, n = 35 vs. n = 31 pilot), and effects may differ by Mediterranean versus non-Mediterranean populations, limiting generalizability.

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Integrity signals

Registry

Crossref · 10.1007/s13679-022-00481-1

Cites

153 of 153 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Figures

Fig. 1 The beneficial mechanisms of Mediterranean diet in obesity-related disorders
Fig. 1 The beneficial mechanisms of Mediterranean diet in obesity-related disordersCC BY · PubMed Central
Fig. 2 The beneficial effects of adherence to MD on cardiometabolic factors and diabetic complications in patients with type 2 diabetes
Fig. 2 The beneficial effects of adherence to MD on cardiometabolic factors and diabetic complications in patients with type 2 diabetesCC BY · PubMed Central

Verification

Claims the paper makes

45 Not checked yet · 10 Own interpretation · 1 Own method

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  • It may state two separate claims as one. 25
  • Probably not a substantial claim. 4
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Citations

Cites

3 retracted

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Research works printed but not linked: 2

  1. Network GBoDC. Global Burden of Disease Study 2015 (GBD 2015) Obesity and Overweight Prevalence 1980–2015. IHME Seattle; 2017.
  2. Federation ID. IDF diabetes atlas. 1st ed. Brussels, Belgium: International Diabetes Federation; 2019.

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Metadata

Authors
Muscogiuri, G., Verde, L., Sulu, C., Katsiki, N., Hassapidou, M., Frias-Toral, E., Cucalón, G., Pazderska, A., Yumuk, V. D., Colao, A., & Barrea, L.
Affiliations
  • Federico II University Hospital (IT)
  • University of Naples Federico II (IT)
  • Istanbul University-Cerrahpaşa (TR)
  • International Hellenic University (GR)
  • Escuela Superior Politecnica del Litoral (EC)
  • Pegaso University (IT)
Corresponding author
  • Muscogiuri, Giovanna
  • Barrea, Luigi
Venue
Current Obesity Reports
Published
2022-09-30
Volume
11
Issue
4
Pages
287-304
ISSN
2162-4968 (ISSN-L)
OpenAlex
W4298087838
Cited by
207
References
153
Citations by year
2026: 36 · 2025: 62 · 2024: 67 · 2023: 40 · 2022: 2
FWCI
8.49
Type
journal article
Language
en
Open access
Locations
  • Current Obesity Reports (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Greater South Information System
Funders
Università degli Studi di Napoli Federico II
Topics
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Nutritional Studies and Diet
  • Health Sciences › Medicine › Physiology (medical) › Diet and metabolism studies
  • Health Sciences › Medicine › Physiology (medical) › Dietary Effects on Health
Keywords
Mediterranean diet, obesity, obesity-related disorders, weight loss, dyslipidemia, hypertension, type 2 diabetes, cardiovascular disease, gut microbiota, inflammation, extra virgin olive oil, non-communicable diseases, dietary intervention
MeSH terms
Noncommunicable Diseases, Cardiovascular Diseases, Diabetes Mellitus, Type 2, Humans, Hypertension, Obesity, Diet, Mediterranean

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