Can gut health affect my mental health?

July 08, 2023 2 min read

Can gut health affect my mental health?

Can gut health affect my mental health?

Yes, gut health can affect mental health. There is a growing body of research suggesting that the gut microbiome plays an important role in brain function and behavior, and that imbalances in the gut microbiome can contribute to mental health issues such as anxiety, depression, and even autism (1).

One way that the gut microbiome can influence mental health is through the gut-brain axis, which is a bidirectional communication system between the gut and the brain. The gut microbiome communicates with the brain via the vagus nerve, as well as through the production of neurotransmitters and other signaling molecules that can influence brain function and behavior (2).

Several studies have found that probiotics, which are beneficial bacteria that can be found in certain foods and supplements, can improve mood and reduce symptoms of anxiety and depression in both healthy individuals and those with mental health disorders (3,4).

Other studies have found that diets high in fiber, which can help promote the growth of beneficial gut bacteria, are associated with a lower risk of depression (5).

It's worth noting that the relationship between gut health and mental health is complex, and more research is needed to fully understand the mechanisms involved. However, the evidence to date suggests that maintaining a healthy gut microbiome is an important aspect of overall mental health and well-being.


  1. Dinan, T. G., & Cryan, J. F. (2017). Gut instincts: microbiota as a key regulator of brain development, ageing and neurodegeneration. Journal of Physiology, 595(2), 489-503.
  2. Mayer, E. A., Knight, R., Mazmanian, S. K., Cryan, J. F., & Tillisch, K. (2014). Gut microbes and the brain: paradigm shift in neuroscience. Journal of Neuroscience, 34(46), 15490-15496.
  3. Wallace, C. J., Milev, R., & Theoharides, T. C. (2017). Effects of probiotics on the symptoms of anxiety: A systematic review and meta-analysis. Journal of Psychiatric Research, 90, 1-13.
  4. Slykerman, R. F., Hood, F., Wickens, K., Thompson, J. M., Barthow, C., Murphy, R., ... & Crane, J. (2017). Effect of Lactobacillus rhamnosus HN001 in pregnancy on postpartum symptoms of depression and anxiety: a randomised double-blind placebo-controlled trial. EBioMedicine, 24, 159-165.
  5. Li, Y., Lv, M. R., Wei, Y. J., Sun, L., Zhang, J. X., Zhang, H. G., & Li, B. (2019). Dietary fiber intake and risk of depressive symptoms: a systematic review and meta-analysis of epidemiological studies. Nutrition Journal, 18(1), 1-13.

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