Evidence mapPaperPMID 41533324Full record

ArticleObesity surgery2026

Bariatric Surgery Outcomes in an Italian Single-Center Study: Does Chronotype Matter?

Federica Sileo, Santo Colosimo, Amalia Bruno, Andrea Gambetti, Francesco Frattini, Ramona De Amicis, Federica Barbera, Alice Gotti, Verdiana Vincenti, Laura Inì and 7 more

Abstract read
In one paragraph

Article in Obesity surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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0cells of the map it votes in
1citing papers in PubMed
field-weighted citation impact
1 · What the graph read from it

What it found

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2 · The registry

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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

1 citing paper in PubMed.

  1. Review
4 · The record

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5 · Who and what money

Authors and funding

17 authors.

Federica SileoDepartment of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Milan, Italy.
Santo ColosimoDepartment of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Milan, Italy.
Amalia BrunoIRCCS Istituto Auxologico Italiano, Obesity Unit and Laboratory of Nutrition and Obesity Research, Department of Endocrine and Metabolic Diseases, Milan, Italy.
Andrea GambettiIRCCS Istituto Auxologico Italiano, Bariatric Surgery Unit, Milan, Italy.
Francesco FrattiniIRCCS Istituto Auxologico Italiano, Bariatric Surgery Unit, Milan, Italy.
Ramona De AmicisDepartment of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Milan, Italy.
Federica BarberaSpecialty School of Nutrition Science, University of Milan, Milan, Italy.
Alice GottiSpecialty School of Nutrition Science, University of Milan, Milan, Italy.
Verdiana VincentiSpecialty School of Nutrition Science, University of Milan, Milan, Italy.
Laura InìSpecialty School of Nutrition Science, University of Milan, Milan, Italy.
Raffaella CancelloIRCCS Istituto Auxologico Italiano, Obesity Unit and Laboratory of Nutrition and Obesity Research, Department of Endocrine and Metabolic Diseases, Milan, Italy.
Marina CrociIRCCS Istituto Auxologico Italiano, Obesity Unit and Laboratory of Nutrition and Obesity Research, Department of Endocrine and Metabolic Diseases, Milan, Italy.
Margherita NovelliIRCCS Istituto Auxologico Italiano, Clinical Psychology Service, Milan, Italy.
Alessandro LeoneDepartment of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Milan, Italy.
Gianlorenzo DionigiDepartment of Pathophysiology and Transplantation, University of Milan, Milan, Italy.
Alberto BattezzatiDepartment of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Milan, Italy.
Simona BertoliDepartment of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Milan, Italy. simona.bertoli@unimi.it.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundChronotype reflects an individual's intrinsic circadian preference for the timing of daily behaviors, including sleep, eating, and physical activity. It influences not only biological rhythms but also lifestyle patterns that may impact metabolic health. In the context of bariatric surgery, numerous factors may affect postoperative outcomes such as weight loss and the risk of weight regain. Given the growing interest in chronobiology and its relevance to obesity management, this study aimed to explore whether chronotype is significantly associated with key weight loss outcomes following bariatric surgery at 6 and 12 months post-intervention.

methodsA total of 263 patients underwent bariatric surgery at a single center. Baseline assessments included anthropometric, biochemical, and behavioral evaluations, including chronotype categorization. Postoperative outcomes at 6 and 12 months included absolute weight, BMI, percentage of initial body weight loss (%IBWL), and percentage of excess body weight loss (%EBWL).

resultsThere was no significant difference among the three different chronotypes (evening, intermediate, and morning chronotype) in terms of absolute weight, BMI, %EWL and %IBWL at 6 and 12 months after surgery.

conclusionsOur results suggest that chronotype does not seem to play a critical role in weight loss outcomes in bariatric surgery patients, characterized by severe obesity. Further studies are needed to more thoroughly assess the impact of chronotype on bariatric surgery outcomes and a more detailed characterization of chronotype itself in these patients could be decisive.

Indexed as

Bariatric SurgeryChronotypeCircadian RhythmObesity, MorbidWeight LossAdultBody Mass IndexFemaleHumansItalyMaleMiddle AgedTreatment OutcomeBariatric surgeryChronotypeWeight loss

Identifiers

PMID41533324
PMCPMC13083481

What Socratic holds

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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 Socratic graph.