metricas
Medicina Clínica (English Edition) Stress, microbiota, and the gut–brain axis in mental and digestive health
Journal Information
Vol. 164. Issue 6.
Pages 263-324 (March 2025)
Cite
Cite
Share
Download PDF
More article options
Visits
3204
Vol. 164. Issue 6.
Pages 263-324 (March 2025)
Review

Stress, microbiota, and the gut–brain axis in mental and digestive health

Estrés, microbiota y el eje intestino-cerebro en la salud mental y digestiva
Visits
3204
Javier Santosa,b,c,
Corresponding author
, Patricia Laura Marand,e, Amanda Rodríguez-Urrutiad,e,f,g
a Gastroenterology Department, Vall d’Hebron Hospital Universitari, Vall d’Hebron Hospital Campus, Barcelona, Spain
b Digestive Physiology and Physiopathology Research Group, Vall d’Hebron Research Institute (VHIR), Barcelona, Spain
c Centro de Investigación Biomédica en Red, Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
d Group of Psychiatry, Mental Health and Addictions, Vall d’Hebron Research Institute (VHIR), Barcelona, Spain
e Department of Psychiatry and Forensic Medicine, Universitat Autònoma de Barcelona, Barcelona, Spain
f Treatment-Resistant Depression Programme, The Brain-Inmune-Gut Unit, Mental Health Department, Vall d’Hebron Hospital Campus, Barcelona, Spain
g Centro de Investigación Biomédica en Red, Salud Mental (CIBERSAM), Instituto de Salud Carlos III, Madrid, Spain
This item has received
Article information
Abstract
Full Text
Bibliography
Download PDF
Statistics
Abstract

The prevailing mind-body dualism in contemporary medicine, rooted in reductionism and the fragmentation of knowledge, has impeded the development of a conceptual model that can adequately address the complexity of illnesses. Integrating biomedical data into a cohesive model that considers the mind–body–context interconnections is essential. This integration is not merely theoretical; rather, it has significant clinical implications. This is exemplified by chronic stress-related mental and digestive disorders. The onset and development of these disorders are intimately linked to chronic psychological stress via the brain–gut–microbiota axis. The present article examines the evidence and mechanisms indicating that stress is a primary factor and a potentiator of symptom severity in common mental health and digestive diseases, with a particular focus on human studies. However, due to space limitations, only a very general overview of preventive and therapeutic clinical strategies is provided. It is hoped that the recurring phrase, “Everything that happens to you is due to stress,” will become more comprehensible to the physician after reading this manuscript.

Keywords:
Brain–gut
Microbiome
Stress
Inflammation
Neuroimmune activation
Anxiety
Depression
Digestive disorders
Resumen

El dualismo mente-cuerpo imperante en la medicina contemporánea, arraigado en el reduccionismo y la fragmentación del conocimiento, ha impedido el desarrollo de un modelo conceptual para abordar adecuadamente la complejidad de las enfermedades. Es esencial integrar los datos biomédicos en un modelo cohesivo que considere las interconexiones mente-cuerpo. La aparición y el desarrollo de los trastornos mentales y digestivos relacionados con el estrés crónico están íntimamente ligados al eje cerebro-intestino-microbiota. Este artículo examina las evidencias y los mecanismos que indican que el estrés es un factor primario y un potenciador de la gravedad de los síntomas en enfermedades mentales y digestivas comunes, con especial atención a los estudios en humanos. Sin embargo, debido a las limitaciones de espacio, solo se ofrece una visión muy general de las estrategias clínicas preventivas y terapéuticas. Esperamos que la frase recurrente «Lo que te está pasando se debe al estrés» resulte más comprensible para el médico tras la lectura de este manuscrito.

Palabras clave:
Cerebro-intestino
Microbioma
Estrés
Inflamación
Activación neuroinmune
Ansiedad
Depresión
Trastornos digestivos

Article

These are the options to access the full texts of the publication Medicina Clínica (English Edition)
Subscriber
Subscriber

If you already have your login data, please click here .

If you have forgotten your password you can you can recover it by clicking here and selecting the option “I have forgotten my password”
Purchase
Purchase article

Purchasing article the PDF version will be downloaded

Purchase now
Contact
Phone for subscriptions and reporting of errors
From Monday to Friday from 9 a.m. to 6 p.m. (GMT + 1) except for the months of July and August which will be from 9 a.m. to 3 p.m.
Calls from Spain
932 415 960
Calls from outside Spain
+34 932 415 960
E-mail
References
[1]
Q. Liu, H. He, J. Yang, X. Feng, F. Zhao, J. Lyu.
Changes in the global burden of depression from 1990 to 2017: findings from the Global Burden of Disease study.
J Psychiatr Res, 126 (2020), pp. 134-140
[2]
S. Trautmann, J. Rehm, H.U. Wittchen.
The economic costs of mental disorders: do our societies react appropriately to the burden of mental disorders?.
EMBO Rep, 17 (2016), pp. 1245-1249
[3]
C.J. Black, A.C. Ford.
Global burden of irritable bowel syndrome: trends, predictions and risk factors.
Nat Rev Gastroenterol Hepatol, 17 (2020), pp. 473-486
[4]
G.G. Kaplan, J.W. Windsor.
The four epidemiological stages in the global evolution of inflammatory bowel disease.
Nat Rev Gastroenterol Hepatol, 18 (2021), pp. 56-66
[5]
H.M. Staudacher, C.J. Black, S.B. Teasdale, A. Mikocka-Walus, L. Keefer.
Irritable bowel syndrome and mental health comorbidity – approach to multidisciplinary management.
Nat Rev Gastroenterol Hepatol, 20 (2023), pp. 582-596
[6]
V.L. Nikolova, L. Pelton, C.D. Moulton, D. Zorzato, A.J. Cleare, A.H. Young, et al.
The prevalence and incidence of irritable bowel syndrome and inflammatory bowel disease in depression and bipolar disorder: a systematic review and meta-analysis.
Psychosom Med, 84 (2022), pp. 313-324
[7]
M. Zamani, S. Alizadeh-Tabari, V. Zamani.
Systematic review with meta-analysis: the prevalence of anxiety and depression in patients with irritable bowel syndrome.
Aliment Pharmacol Ther, 50 (2019), pp. 132-143
[8]
N. Koloski, M. Jones, N. Talley.
Evidence that independent gut-to-brain and brain-to-gut pathways operate in the irritable bowel syndrome and functional dyspepsia: a 1-year population-based prospective study.
Aliment Pharmacol Ther, 44 (2016), pp. 592-600
[9]
A. Agorastos, G.P. Chrousos.
The neuroendocrinology of stress: the stress-related continuum of chronic disease development.
Mol Psychiatry, 27 (2022), pp. 502-513
[10]
G.P. Chrousos.
Stress and disorders of the stress system.
Nat Rev Endocrinol, 5 (2009), pp. 374-381
[11]
B.S. McEwen, J.C. Wingfield.
The concept of allostasis in biology and biomedicine.
[12]
G. Gillies, E. Linton, P. Lowry.
Corticotropin releasing activity of the new CRF is potentiated several times by vasopressin.
Nature, 299 (1982), pp. 355-357
[13]
J.P. Herman, J.M. McKlveen, S. Ghosal, B. Kopp, A. Wulsin, R. Makinson, et al.
Regulation of the hypothalamic-pituitary-adrenocortical stress response.
Compr Physiol, 6 (2016), pp. 603-621
[14]
S.L. Lightman, M.T. Birnie, B.L. Conway-Campbell.
Dynamics of ACTH and cortisol secretion and implications for disease.
Endocr Rev, 41 (2020), pp. bnaa002
[15]
S.L. Lightman, C.C. Wiles, H.C. Atkinson, D.E. Henley, G.M. Russell, J.A. Leendertz, et al.
The significance of glucocorticoid pulsatility.
Eur J Pharmacol, 583 (2008), pp. 255-262
[16]
R.R. Vollmer.
Selective neural regulation of epinephrine and norepinephrine cells in the adrenal medulla – cardiovascular implications.
Clin Exp Hypertens, 18 (1996), pp. 731-751
[17]
E.R. De Kloet, E. Vreugdenhil, M.S. Oitzl, M. Joels.
Brain corticosteroid receptor balance in health and disease.
Endocr Rev, 19 (1998), pp. 269-301
[18]
D.J. Woodward, H.C. Moises, B.D. Waterhouse, H.H. Yeh, J.E. Cheun.
Modulatory actions of norepinephrine on neural circuits.
Neuroreceptor mechanisms in brain, pp. 193-208
[19]
K. Michel, B. Kuch, S. Dengler, I.E. Demir, F. Zeller, M. Schemann.
How big is the little brain in the gut? Neuronal numbers in the enteric nervous system of mice, Guinea pig, and human.
Neurogastroenterol Motil, 34 (2022), pp. e14440
[20]
N.C. Nicolaides, E. Charmandari, T. Kino, G.P. Chrousos.
Stress-related and circadian secretion and target tissue actions of glucocorticoids: impact on health.
Front Endocrinol (Lausanne), 8 (2017), pp. 70
[21]
A. Wallrapp, I.M. Chiu.
Neuroimmune interactions in the intestine.
Annu Rev Immunol, 42 (2024), pp. 489-519
[22]
J.F. Cryan, K.J. O’Riordan, C.S.M. Cowan, K.V. Sandhu, T.F.S. Bastiaanssen, M. Boehme, et al.
The microbiota–gut–brain axis.
Physiol Rev, 99 (2019), pp. 1877-2013
[23]
N.W. Bellono, J.R. Bayrer, D.B. Leitch, J. Castro, C. Zhang, T.A. O’Donnell, et al.
Enterochromaffin cells are gut chemosensors that couple to sensory neural pathways.
[24]
R. Bany Bakar, F. Reimann, F.M. Gribble.
The intestine as an endocrine organ and the role of gut hormones in metabolic regulation.
Nat Rev Gastroenterol Hepatol, 20 (2023), pp. 784-796
[25]
A. Cugurra, T. Mamuladze, J. Rustenhoven, T. Dykstra, G. Beroshvili, Z.J. Greenberg, et al.
Skull and vertebral bone marrow are myeloid cell reservoirs for the meninges and CNS parenchyma.
Science, 373 (2021), pp. eabf7844
[26]
J.B. Furness.
The enteric nervous system and neurogastroenterology.
Nat Rev Gastroenterol Hepatol, 9 (2012), pp. 286-294
[27]
D. Gallego, N. Mañé, V. Gil, M. Martínez-Cutillas, M. Jiménez.
Mechanisms responsible for neuromuscular relaxation in the gastrointestinal tract.
Rev Esp Enferm Dig, 108 (2016), pp. 721-731
[28]
L. Seguella, B.D. Gulbransen.
Enteric glial biology, intercellular signalling and roles in gastrointestinal disease.
Nat Rev Gastroenterol Hepatol, 18 (2021), pp. 571-587
[29]
M.D. Gershon, K.G. Margolis.
The gut, its microbiome, and the brain: connections and communications.
J Clin Invest, 131 (2021),
[30]
T. Vanuytsel, P. Bercik, G. Boeckxstaens.
Understanding neuroimmune interactions in disorders of gut–brain interaction: from functional to immune-mediated disorders.
[31]
J.M. Sasso, R.M. Ammar, R. Tenchov, S. Lemmel, O. Kelber, M. Grieswelle, et al.
Gut microbiome–brain alliance: a landscape view into mental and gastrointestinal health and disorders.
ACS Chem Neurosci, 14 (2023), pp. 1717-1763
[32]
G. Agirman, K.B. Yu, E.Y. Hsiao.
Signaling inflammation across the gut–brain axis.
Science, 374 (2021), pp. 1087-1092
[33]
M.R. Aburto, J.F. Cryan.
Gastrointestinal and brain barriers: unlocking gates of communication across the microbiota–gut–brain axis.
Nat Rev Gastroenterol Hepatol, 21 (2024), pp. 222-247
[34]
J.R. Bayrer, J. Castro, A. Venkataraman, K.K. Touhara, N.D. Rossen, R.D. Morrie, et al.
Gut enterochromaffin cells drive visceral pain and anxiety.
Nature, 616 (2023), pp. 137-142
[35]
H. Domin, M. Śmiałowska.
The diverse role of corticotropin-releasing factor (CRF) and its CRF1 and CRF2 receptors under pathophysiological conditions: insights into stress/anxiety, depression, and brain injury processes.
Neurosci Biobehav Rev, 163 (2024), pp. 105748
[36]
P.W. Gold.
Endocrine factors in key structural and intracellular changes in depression.
Trends Endocrinol Metab, 32 (2021), pp. 212-223
[37]
M. Pigrau, B. Rodiño-Janeiro, M. Casado-Bedmar, B. Lobo, M. Vicario, J. Santos, et al.
The joint power of sex and stress to modulate brain–gut–microbiota axis and intestinal barrier homeostasis: implications for irritable bowel syndrome.
Neurogastroenterol Motil, 28 (2016), pp. 463-486
[38]
T. Mogilevski, R. Burgell, Q. Aziz, P.R. Gibson.
Review article: the role of the autonomic nervous system in the pathogenesis and therapy of IBD.
Aliment Pharmacol Ther, 50 (2019), pp. 720-737
[39]
M. Pigrau, B.K. Rodino-Janeiro, M. Casado-Bedmar, B. Lobo, M. Vicario, J. Santos, et al.
The joint power of sex and stress to modulate brain–gut–microbiota axis and intestinal barrier homeostasis: implications for irritable bowel syndrome.
Neurogastroenterol Motil, 28 (2016), pp. 463-486
[40]
K.M. Schneider, N. Blank, Y. Alvarez, K. Thum, P. Lundgren, L. Litichevskiy, et al.
The enteric nervous system relays psychological stress to intestinal inflammation.
[41]
G.M. Wittenberg, A. Stylianou, Y. Zhang, Y. Sun, A. Gupta, P. Jagannatha, et al.
Effects of immunomodulatory drugs on depressive symptoms: a mega-analysis of randomized, placebo-controlled clinical trials in inflammatory disorders.
Mol Psychiatry, 25 (2020), pp. 1275-1285
[42]
S. Malan-Müller, D. Martín-Hernández, J.R. Caso, J. Matthijnssens, A. Rodríguez-Urrutia, C.A. Lowry, et al.
Metagenomic symphony of the intestinal ecosystem: how the composition affects the mind.
Brain Behav Immun, 123 (2025), pp. 510-523
[43]
A.C. Ford, H.M. Staudacher, N.J. Talley.
Postprandial symptoms in disorders of gut–brain interaction and their potential as a treatment target.
[44]
W. Wei, Y. Liu, Y. Hou, S. Cao, Z. Chen, Y. Zhang, et al.
Psychological stress-induced microbial metabolite indole-3-acetate disrupts intestinal cell lineage commitment.
[45]
E. Beurel, M. Toups, C.B. Nemeroff.
The bidirectional relationship of depression and inflammation: double trouble.
[46]
J. Santos, C. Alonso, M. Vicario, L. Ramos, B. Lobo, J.R. Malagelada.
Neuropharmacology of stress-induced mucosal inflammation: implications for inflammatory bowel disease and irritable bowel syndrome.
Curr Mol Med, 8 (2008), pp. 258-273
[47]
H. Chang, M.H. Perkins, L.S. Novaes, F. Qian, T. Zhang, P.H. Neckel, et al.
Stress-sensitive neural circuits change the gut microbiome via duodenal glands.
[48]
M.M. Kaelberer, K.L. Buchanan, M.E. Klein, B.B. Barth, M.M. Montoya, X. Shen, et al.
A gut–brain neural circuit for nutrient sensory transduction.
Science, 361 (2018), pp. eaat5236
[49]
J. Gao, T. Xiong, G. Grabauskas, C. Owyang.
Mucosal serotonin reuptake transporter expression in irritable bowel syndrome is modulated by gut microbiota via mast cell–prostaglandin E2.
[50]
L.-M. Chen, C.-H. Bao, Y. Wu, S.-H. Liang, D. Wang, L.-Y. Wu, et al.
Tryptophan–kynurenine metabolism: a link between the gut and brain for depression in inflammatory bowel disease.
J Neuroinflammation, 18 (2021), pp. 135
[51]
Y. Song, H. Cao, C. Zuo, Z. Gu, Y. Huang, J. Miao, et al.
Mitochondrial dysfunction: a fatal blow in depression.
Biomed Pharmacother, 167 (2023), pp. 115652
[52]
M. Vicario, C. Alonso, M. Guilarte, J. Serra, C. Martinez, A.M. Gonzalez-Castro, et al.
Chronic psychosocial stress induces reversible mitochondrial damage and corticotropin-releasing factor receptor type-1 upregulation in the rat intestine and IBS-like gut dysfunction.
Psychoneuroendocrinology, 37 (2012), pp. 65-77
[53]
S. Carloni, A. Bertocchi, S. Mancinelli, M. Bellini, M. Erreni, A. Borreca, et al.
Identification of a choroid plexus vascular barrier closing during intestinal inflammation.
Science, 374 (2021), pp. 439-448
[54]
D. Kwon.
Guardians of the brain: how a special immune system protects our grey matter.
[55]
M. Gazouli, M.M. Wouters, L. Kapur-Pojskic, M.B. Bengtson, E. Friedman, G. Nikcevic, et al.
Lessons learned – resolving the enigma of genetic factors in IBS.
Nat Rev Gastroenterol Hepatol, 13 (2016), pp. 77-87
[56]
A.M. Cocean, D.C. Vodnar.
Exploring the gut–brain axis: potential therapeutic impact of psychobiotics on mental health.
Prog Neuropsychopharmacol Biol Psychiatry, 134 (2024), pp. 111073
[57]
A.P. Allen, W. Hutch, Y.E. Borre, P.J. Kennedy, A. Temko, G. Boylan, et al.
Bifidobacterium longum 1714 as a translational psychobiotic: modulation of stress, electrophysiology and neurocognition in healthy volunteers.
Transl Psychiatry, 6 (2016),
[58]
H.M. Savignac, B. Kiely, T.G. Dinan, J.F. Cryan.
Bifidobacteria exert strain-specific effects on stress-related behavior and physiology in BALB/c mice.
Neurogastroenterol Motil, 26 (2014), pp. 1615-1627
[59]
H.M. Savignac, M. Tramullas, B. Kiely, T.G. Dinan, J.F. Cryan.
Bifidobacteria modulate cognitive processes in an anxious mouse strain.
Behav Brain Res, 287 (2015), pp. 59-72
[60]
H. Wang, C. Braun, E.F. Murphy, P. Enck.
Bifidobacterium longum 1714™ strain modulates brain activity of healthy volunteers during social stress.
Am Coll Gastroenterol, 114 (2019), pp. 1152-1162
[61]
Y. Meng, J. Sun, G. Zhang.
Pick fecal microbiota transplantation to enhance therapy for major depressive disorder.
Prog Neuropsychopharmacol Biol Psychiatry, 128 (2024), pp. 110860
[62]
A. Carroll, C. Collins, J. McKenzie, D. Stokes, A. Darley.
Application of complexity theory in health and social care research: a scoping review.
BMJ Open, 13 (2023), pp. e069180
asdasdasd
Article options
Tools