Evidence map›Paper›PMID 42621849›Full record

ArticleJournal of internal medicine2026

Habitual fasting duration and accelerated multimorbidity in older adults.

Luis Kalmbach, David Abbad-Gomez, Giorgi Beridze, Fernando Rodríguez-Artalejo, Davide Liborio Vetrano, Amaia Calderón-Larrañaga, Adrián Carballo-Casla

Abstract read
In one paragraph

Article in Journal of internal medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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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

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.

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

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Luis KalmbachAging Research Center, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet and Stockholm University, Stockholm, Sweden.ORCID https://orcid.org/0009-0004-4459-2148
David Abbad-GomezDepartment of Epidemiology and Evaluation, Hospital del Mar, Barcelona, Spain.ORCID https://orcid.org/0009-0004-6287-0076
Giorgi BeridzeAging Research Center, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet and Stockholm University, Stockholm, Sweden.ORCID https://orcid.org/0000-0002-2615-226X
Fernando Rodríguez-ArtalejoDepartment of Preventive Medicine and Public Health, Universidad Autónoma de Madrid, Madrid, Spain.ORCID https://orcid.org/0000-0001-9317-5755
Davide Liborio VetranoAging Research Center, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet and Stockholm University, Stockholm, Sweden.ORCID https://orcid.org/0000-0002-3099-4830
Amaia Calderón-LarrañagaAging Research Center, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet and Stockholm University, Stockholm, Sweden.ORCID https://orcid.org/0000-0001-9064-9222
Adrián Carballo-CaslaAging Research Center, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet and Stockholm University, Stockholm, Sweden.ORCID https://orcid.org/0000-0001-9401-9869

Funding

Alzheimerfonden AF-1010573David and Astrid Hagelén Foundation 2024-0005Foundation for Geriatric Diseases at Karolinska Institutet 2024-0011Karolinska Institutet Research Foundation Grants 2024-0017Karolinska Institutet Strategic Research Area in Epidemiology and Biostatistics 2021Karolinska Institutet Strategic Research Area in Epidemiology and Biostatistics 2023Karolinska Institutet Strategic Research Area in Neuroscience 2025Swedish Ministry of Health and Social AffairsSwedish Research Council 2021-00178Swedish Research Council 2021-03324Swedish Research Council 2021-06398Swedish Research Council for Health, Working Life and Welfare 2021-00256Swedish Research Council for Health, Working Life and Welfare 2024-01830Swedish Research Council for Health, Working Life and Welfare STY-2024/0005
6 · The paper itself

Abstract

backgroundProlonged fasting has been linked to metabolic benefits in younger adults, but its effects on chronic diseases in older populations remain unclear.

objectiveTo examine the association between habitual fasting duration and 15-year chronic disease accumulation in older adults, overall, within organ systems, and between age groups.

methodsData were drawn from the Swedish National study on Aging and Care in Kungsholmen, a longitudinal population-based cohort of 2981 predominantly community-dwelling adults aged ≥60 years. Habitual fasting duration was the longest interval between two typical eating occasions within a 24-h window. Multimorbidity was the total number of chronic diseases (out of 60) at each visit, analyzed overall and within cardiovascular, neuropsychiatric, and musculoskeletal organ systems. Multivariate linear mixed models estimated the association between habitual fasting duration and the annual rate of multimorbidity accumulation, overall and stratified by age (<78 vs. ≥78 years).

resultsCompared with the lowest habitual fasting quartile (6-11.5 h), participants in the highest quartile (14-24 h) experienced steeper annual accumulation of total chronic diseases (β = 0.119; 95% confidence interval: 0.070, 0.167), cardiovascular diseases (0.022 [0.006, 0.038]), and neuropsychiatric diseases (0.019 [0.005, 0.033]), but not musculoskeletal diseases. The association with total chronic disease accumulation was apparent in adults aged ≥78 years (β = 0.099 [0.031, 0.168]) but absent in those <78 years (-0.009 [-0.078, 0.061]). Findings remained consistent across sensitivity analyses addressing reverse causation, measurement bias, and residual confounding.

conclusionIn older adults, particularly the older old, longer habitual fasting duration was associated with faster chronic disease accumulation, suggesting it may be detrimental in advanced age.

Indexed as

FastingMultimorbidityAgedAged, 80 and overCardiovascular DiseasesChronic DiseaseFemaleHumansIntermittent FastingLongitudinal StudiesMaleMiddle AgedSwedenTime Factorscohort studiesdisease progressionfeeding behaviorfrail elderlygeriatricsnutritional status

Identifiers

PMID42621849
PMCPMC13641277

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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.