Cited by 68Dietary Effects on HealthGut microbiota and healthGastrointestinal motility and disorders

Brain–Gut–Microbiome Interactions and Intermittent Fasting in Obesity

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Frank, Juliette, Gupta, Arpana, Osadchiy, Vadim, Mayer, Emeran A.·2021·Nutrients

Abstract

The obesity epidemic and its metabolic consequences are a major public health problem both in the USA and globally. While the underlying causes are multifactorial, dysregulations within the brain–gut–microbiome (BGM) system play a central role. Normal eating behavior is coordinated by the tightly regulated balance between intestinal, extraintestinal and central homeostatic and hedonic mechanisms, resulting in stable body weight. The ubiquitous availability and marketing of inexpensive, highly palatable and calorie-dense food has played a crucial role in shifting this balance towards hedonic eating through both central (disruptions in dopaminergic signaling) and intestinal (vagal afferent function, metabolic toxemia, systemic immune activation, changes to gut microbiome and metabolome) mechanisms. The balance between homeostatic and hedonic eating behaviors is not only influenced by the amount and composition of the diet, but also by the timing and rhythmicity of food ingestion. Circadian rhythmicity affects both eating behavior and multiple gut functions, as well as the composition and interactions of the microbiome with the gut. Profound preclinical effects of intermittent fasting and time restricted eating on the gut microbiome and on host metabolism, mostly demonstrated in animal models and in a limited number of controlled human trials, have been reported. In this Review, we will discuss the effects of time-restricted eating on the BGM and review the promising effects of this eating pattern in obesity treatment.

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  • Interaction of such hormones in the periphery and hypothalamus plays a key role in regulation of appetite and satiety, and dysregulation has been implicated in obesity and food addiction.

    “The interaction of such hormones in the periphery and in the hypothalamus play a key role in the regulation of appetite and satiety [23] and a dysregulation of these signaling systems has been implicated in obesity and food addiction [24].”

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Authors
Frank, J., Gupta, A., Osadchiy, V., & Mayer, E. A.
Affiliations
University of California, Los Angeles (US)
Corresponding author
Mayer, Emeran A.
Venue
Nutrients
Publisher
MDPI AG
Published
2021-02-10
Volume
13
Issue
2
Pages
584
ISSN
2072-6643 (ISSN-L)
OpenAlex
W3129023812
Cited by
68
References
90
Citations by year
2026: 7 · 2025: 16 · 2024: 12 · 2023: 9 · 2022: 16 · 2021: 8
FWCI
1.50
Type
journal article
Language
en
Open access
Locations
  • Nutrients (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK 041301, DK048351, R01DK048351, K23DK106528, R03DK121025)
  • National Institute on Minority Health and Health Disparities (R01MD015904)
Topics
  • Health Sciences › Medicine › Physiology › Dietary Effects on Health
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
Keywords
intermittent fasting, time-restricted eating, obesity, dietary habits, hedonic eating, dopaminergic signaling, systemic immune activation, gut microbiota, metabolome, circadian rhythm, meal timing, obesity treatment
MeSH terms
Gastrointestinal Microbiome, Food Addiction, Animals, Brain, Circadian Rhythm, Diet, Fasting, Feeding Behavior, Humans, Obesity, Stress, Psychological, Vagus Nerve, Gastrointestinal Tract, Metabolome, Dysbiosis

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