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How Kefir Effects Your Mood & Mental Health


Did you know that your gut bacteria may be able to impact your mood, and prevent anxiety and depression? Scientific evidence is mounting that the most effective way to treat your brain, is actually through your gut.

The gut-brain connection explained

Often, the gut is referred to as the ‘second brain’. Ninety-five percent of your serotonin, or ‘happy hormone,’ is produced inside your gut by specialised cells called enterochromaffin cells. The vagus nerve runs between the gut and the brain, carrying information in both directions.

Damage to this delicate system can result in improper amounts of serotonin being produced and distributed through the brain, resulting in anxiety and depression.

How does gut bacteria affect the brain?

The bacteria which line our intestines are known to be vital for health – but they may influence mental health, too. The latest research suggests that healthy gut flora, the microorganisms which form your microbiome, is necessary for normal behaviour.

Your microbiome interacts with your central nervous system to regulate your brain chemistry, stress response, anxiety level and memory function. This works through a connection called the gut-brain axis, or ‘GABA’. Gut bacteria within your microbiome also produce other chemicals which act on the brain, according to scientists, who think the finding may help explain why chronic gut conditions in people are often linked to mood disorders.

Interestingly, skin appears to be part of this connection as well. Patients with skin condition acne rosacea have a higher incidence of depression than the general population, and some evidence suggests that swallowing certain types of bacteria may improve both acne and depression.

How kefir can contribute to mental health

As kefir contains significant levels of calcium and vitamin A alongside trillions of good living bacteria, it contributes to normal neurotransmission and the normal functioning of the nervous system.


  1. American Association for the Advancement of Science - "Evidence mounts that gut bacteria can influence mood, prevent depression". Written by Elizabeth Pennisi on February 4, 2019
    link to article
  2. Healthline - "The Gut-Brain Connection: How it Works and The Role of Nutrition". Written by Ruairi Robertson, PhD on June 28, 2018
    link to article
  3. ScienceDaily - "Anxiety might be alleviated by regulating gut bacteria". Written by BMJ on May 20, 2019
    link to article
  4. Frontiers - "Gut-Brain Psychology: Rethinking Psychology From the Microbiota–Gut–Brain Axis". Written by Liang S, Wu X and Jin F on September 11, 2018
    link to article
  5. University of Utah - "The Microbiome and Disease". Written by Genetic Science Learning Center on July 31, 2019
    link to article