Gut microbes are linked to depression.

A large study leads researchers to use gut microbes to combat mood disorders (depression).



Now we can clearly say that intestinal microbes are related to depression.

They are checking what kind of bacteria can strengthen our health or contribute to suffering from some pathology. This study has been carried out with thousands of participants since 2002 in Finland and it has been possible to find a guilty intestinal microbe in some types of depression. It has not been an easy task to know which ones are beneficial or harmful to our body, although our bodies are full of billions of these microorganisms and they are crucial for good health.

What is clear to us now is the cause-effect relationship between brain conditions and gut microbes.


It has been shown that patients diagnosed with Autism and Depression have deficiencies of certain key bacteria in their intestines.


Use gut microbes and the substances they produce as new treatments for a wide range of brain disorders.


Fecal transplants improve symptoms in depressed patients

It was reported a few days ago in Frontiers in Psychiatry by bioinformatician Guillaume Méric of Baker Heart & Diabetes Institute that after conducting this study in Finland on health and lifestyle they were able to track the underlying causes of chronic diseases as the genetic makeup of 6000 participants was evaluated. This is where they discovered by chance that microorganisms had a lot to do with certain pathologies and that fecal transplants improve symptoms in depressed patients.

This same week this study also came out in Nature Genetics showing that 2 sections of the human genome seem to have a strong influence on which microorganisms are present in the intestine. One contains the gene to digest lactose and the other helps specify blood type.

Some genetic variants can affect the abundance of these microbes and which ones are directly linked to 46 common diseases. For example Morganella was in 181 patients who later developed depression.



Depressed people have stronger immune responses to chemicals that bacteria produce.

This field is still in its infancy and the “Holy Grail” would be to identify the missing microbe of each patient in order to administer a treatment.

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