Cited by 200Gut microbiota and healthDietary Effects on HealthGastrointestinal motility and disorders

Time of day and eating behaviors are associated with the composition and function of the human gastrointestinal microbiota

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Kaczmarek, Jennifer L, Musaad, Salma MA, Holscher, Hannah D·2017·The American Journal of Clinical Nutrition

Abstract

Background: Preclinical research has shown that the gastrointestinal microbiota exhibits circadian rhythms and that the timing of food consumption can affect the composition and function of gut microbes. However, there is a dearth of knowledge on these relations in humans.Objective: We aimed to determine whether human gastrointestinal microbes and bacterial metabolites were associated with time of day or behavioral factors, including eating frequency, percentage of energy consumed early in the day, and overnight-fast duration.Design: We analyzed 77 fecal samples collected from 28 healthy men and women. Fecal DNA was extracted and sequenced to determine the relative abundances of bacterial operational taxonomic units (OTUs). Gas chromatography-mass spectroscopy was used to assess short-chain fatty acid concentrations. Eating frequency, percentage of energy consumed before 1400, and overnight-fast duration were determined from dietary records. Data were analyzed by linear mixed models or generalized linear mixed models, which controlled for fiber intake, sex, age, body mass index, and repeated sampling within each participant. Each OTU and metabolite were tested as the outcome in a separate model.Results: Acetate, propionate, and butyrate concentrations decreased throughout the day (P = 0.006, 0.04, and 0.002, respectively). Thirty-five percent of bacterial OTUs were associated with time. In addition, relations were observed between gut microbes and eating behaviors, including eating frequency, early energy consumption, and overnight-fast duration.Conclusions: These results indicate that the human gastrointestinal microbiota composition and function vary throughout the day, which may be related to the circadian biology of the human body, the microbial community itself, or human eating behaviors. Behavioral factors, including timing of eating and overnight-fast duration, were also predictive of bacterial abundances. Longitudinal intervention studies are needed to determine causality of these biological and behavioral relations. This trial was registered at clinicaltrials.gov as NCT01925560.

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  • In humans, Kaczmarek et al. observed that several bacteria were related to the time of eating.

    “In humans, Kaczmarek et al. observed that several bacteria were related to the time of eating [27].”
  • Manipulation of feeding time, including time and duration of consumption and frequency, may influence the gut microbial composition and function and possibly host health.

    “It is possible therefore that manipulation of feeding time, including time and duration of consumption and frequency, may influence the gut microbial composition and function and possibly host health [21,27].”

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  1. Schabenberger O. Introducing the GLIMMIX procedure for generalized linear mixed models [Internet]. In: Proceedings of the Thirtieth Annual SAS Users International Conference. Cary (NC): SAS Institute Inc.; 2005. 196-30. [cited 2017 Feb 17]. Available from: http://citeseerx.ist.psu.edu/ viewdoc/download?doi=10.1.1.463.6093&rep=rep1&type=pdf.

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Authors
Kaczmarek, J. L., Musaad, S. M., & Holscher, H. D.
Affiliations
University of Illinois Urbana-Champaign (US)
Corresponding author
Holscher, Hannah D
Venue
The American Journal of Clinical Nutrition
Publisher
Elsevier BV
Published
2017-11
Volume
106
Issue
5
Pages
1220-1231
ISSN
0002-9165 (ISSN-L)
OpenAlex
W2757150606
Cited by
200
References
52
Citations by year
2026: 19 · 2025: 32 · 2024: 18 · 2023: 21 · 2022: 24 · 2021: 30 · 2020: 23 · 2019: 16 · 2018: 15 · 2017: 1 · 2016: 1
FWCI
6.11
Type
journal article
Language
en
Open access
Locations
  • American Journal of Clinical Nutrition (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • U.S. Department of Agriculture
  • University of Illinois at Urbana-Champaign
  • National Institute of Food and Agriculture
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Medicine › Physiology › Dietary Effects on Health
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
Keywords
gut microbiota, circadian rhythm, time of day, dietary habits, meal frequency, overnight fasting, short-chain fatty acids, bacterial metabolites, acetate, propionate, butyrate, fecal microbiota, meal timing
MeSH terms
Bacillota, Gastrointestinal Microbiome, Adult, Archaea, Circadian Rhythm, Diet, DNA, Bacterial, Fatty Acids, Volatile, Feces, Feeding Behavior, Female, Humans, Male, Diet Records, Randomized Controlled Trials as Topic, Proteobacteria, Actinobacteria, Bacteroidetes, Young Adult

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