Subscribe

Receive updates about our latest products in your inbox

Register For Our Next Webinar

Multivitamins: One Size Does Not Fit All

About Us

For over 40 years, Biotics Research Corporation has revolutionized the nutritional supplement industry by utilizing “The Best of Science and Nature”. Combining nature’s principles with scientific ingenuity, our products magnify the nutritional

Search the Blog

  • There are no suggestions because the search field is empty.

Yet Another Link Between Microbiome and Mood

iStock-958082360A recent review has brought greater insight into the complex relationship between the gut microbiome and mood.

Microbiology and psychiatry are often considered as separate fields, yet clues of a link between the two have emerged in past centuries. In Victorian mental asylums, large numbers of patients had been exposed to the syphilis-causing microbe Treponema pallidum. The 1908 Nobel prize winner in Physiology or Medicine, Élie Mechnikoff, supported the idea that bacteria in fermented milk were beneficial for autointoxication, a historical term used to describe a wide range of symptoms from fatigue to melancholia.

With the help of the emergence of new technology such as next-generation sequencing, we now see a large and growing body of evidence that suggests a direct link between the microbiome and mood alteration.

In studies on animals, a direct link between the microbiota and hypothalamic-pituitary-adrenal (HPA) axis function has been found by looking at the exaggerated corticosterone (CORT) and adrenocorticotrophin (ACTH) levels in germ-free mice in response to restraint stress vis conventionally-housed pathogen-free mice. In rats, giving Lactobacillus probiotics during the early stress period helped normalize CORT levels, as well as influence central nervous system function directly. The administration of pathogenic bacteria, on the other hand, shows that gut microbes can mediate the stress response by activating vagal pathways. Changes in the microbiome can also lead to hyperactivation of the immune system, contributing to the production of inflammatory cytokines typically observed in mood disorders.

When looking at diet, which is known to markedly shape gut microbiome composition, it is clear that dietary interventions can improve mood and that the Mediterranean diet may help alleviate the symptoms of mood imbalances.

The recent review sets out all the evidence we have so far of an altered gut microbiome in people with mood disorders, the role of stress and other factors that affect the microbiome and mood, and the effect of pharmaceuticals on both. The researchers offer ideas on fecal microbiome transplantation and dietary interventions to support the gut microbiome and improve the symptoms of mood disturbance.

Submit your comment

Related Post

Obesity & The Microbiome

BMC Microbiology recently published a meta-analysis of metagenomic sequencing data from obese and non-obese participants...

Learn more

Oral Immunotherapy & the Microbiome

Results of a prospective and longitudinal study conducted among schoolchildren were recently published in Allergology In...

Learn more

Cranberry Extract & the Microbiota

Results of a small human clinical trial recently published in NPJ Biofilms and Microbiomes indicate that short-term use ...

Learn more