Evidence map›Paper›PMID 41806139›Full record

ArticleSleep & breathing = Schlaf & Atmung2026

Sleeping green: an Italian survey for the assessment of the relationship between sleep and vegetarian diet.

Maurizio Gorgoni, Alessio Comparelli, Sofia Frappetta, Valentina Alfonsi, Ludovica Annarumma, Elisa Pellegrini, Milena Camaioni, Alessandro Couyoumdjian, Serena Scarpelli, Luigi De Gennaro

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Article in Sleep & breathing = Schlaf & Atmung, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
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1 · What the graph read from 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.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

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5 · Who and what money

Authors and funding

10 authors.

Maurizio GorgoniDepartment of Psychology, Sapienza University of Rome, Via dei Marsi 78, Rome, 00185, Italy. maurizio.gorgoni@uniroma1.it.ORCID http://orcid.org/0000-0002-5544-5483
Alessio ComparelliDepartment of Psychology, Sapienza University of Rome, Via dei Marsi 78, Rome, 00185, Italy.
Sofia FrappettaDepartment of Psychology, Sapienza University of Rome, Via dei Marsi 78, Rome, 00185, Italy.
Valentina AlfonsiDepartmental Faculty of Medicine and Surgery, UniCamillus-Saint Camillus International University of Health Sciences, Rome, Italy.
Ludovica AnnarummaDepartment of Psychology, Sapienza University of Rome, Via dei Marsi 78, Rome, 00185, Italy.
Elisa PellegriniDepartment of Psychology, Sapienza University of Rome, Via dei Marsi 78, Rome, 00185, Italy.
Milena CamaioniDepartment of Psychology, Sapienza University of Rome, Via dei Marsi 78, Rome, 00185, Italy.
Alessandro CouyoumdjianDepartment of Psychology, Sapienza University of Rome, Via dei Marsi 78, Rome, 00185, Italy.
Serena Scarpelli *Department of Psychology, Sapienza University of Rome, Via dei Marsi 78, Rome, 00185, Italy.
Luigi De Gennaro *Department of Psychology, Sapienza University of Rome, Via dei Marsi 78, Rome, 00185, Italy.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposePlant-based diets are beneficial for health and sleep. Nevertheless, results on the relationship between entirely vegetarian (veg) diets and sleep are scarce and heterogeneous, and many relevant variables are rarely considered. We hypothesize that veg diets may be differently related to several sleep measures considering the role of other intervening factors.

methodsWe used an online survey to collect self-reported data about dietary patterns, sleep quality, insomnia symptoms, sleepiness, obstructive sleep apnoea (OSA) risk, and sleep-related movement disorders. Socidemographic variables, adherence to the Mediterranean diet, mental health, eating disorder symptomatology, and chronotype were also considered.

resultsOur final sample included 747 participants: 532 omnivores (omniv) and 215 veg. Compared to ominv, veg exhibited a lower risk of OSA, a higher frequency of hypnic jerks, and a lower tendency to eveningness, without differences in sleep quality, insomnia symptoms, sleepiness, and other sleep-related movement disorders. Multiple regression models showed that considering the role of other variables the dietary pattern only predicted OSA risk (i.e., greater OSA risk in omniv) and hypnic jerks (i.e., higher hypnic jerk frequency in veg).

conclusionOur findings suggest that an utterly veg diet can affect several sleep variables differently, mainly reducing the risk of OSA and increasing the frequency of hypnic jerks. We highlight the relevance of a thorough assessment of sleep measures associated with the veg diet and the importance of controlling for other confounding factors to reach a more nuanced understanding of the relationship between dietary patterns and sleep.

Indexed as

Diet, VegetarianSleep QualitySleep Wake DisordersAdultChronotypeFemaleHumansItalyMaleMiddle AgedSleep Apnea, ObstructiveSurveys and QuestionnairesHypnic jerksOmnivoreOSASSleepVeganVegetarian

Identifiers

PMID41806139
PMCPMC12975816

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.