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Better Mental Health

Writer's picture: John WeismannJohn Weismann

Updated: Jan 8



The connection between the gut and the brain, often referred to as the gut-brain axis, highlights how a healthy gut microbiome significantly impacts mental health. The gut houses trillions of microorganisms that produce neurotransmitters, regulate inflammation, and communicate with the brain via the vagus nerve. Studies have shown that individuals with a more diverse microbiome tend to experience lower levels of stress, anxiety, and depression (Cryan et al., 2019). This suggests that gut health plays a vital role in emotional regulation and overall psychological well-being.

One of the most critical ways the gut microbiome influences mental health is through the production of serotonin, a neurotransmitter that regulates mood, sleep, and appetite. Remarkably, approximately 90% of the body's serotonin is produced in the gut (Clarke et al., 2014). Beneficial gut bacteria also produce short-chain fatty acids (SCFAs) through the fermentation of dietary fiber, which help reduce inflammation in the brain—a key factor in mood disorders like depression (Dalile et al., 2019). Conversely, an imbalanced microbiome, known as dysbiosis, has been linked to increased risk of anxiety and depression, as well as cognitive decline.

Supporting a healthy gut microbiome through a fiber-rich diet, fermented foods, and probiotics may offer a natural way to improve mental health. Foods such as leafy greens, bananas, kimchi, and yogurt encourage the growth of beneficial bacteria that promote resilience against stress. Emerging research suggests that prebiotics, which feed gut bacteria, and probiotics, which add beneficial strains, can alleviate symptoms of depression and anxiety by modulating the gut-brain axis (Allen et al., 2017). By nurturing gut health, you can create a foundation for better mental clarity, emotional stability, and overall happiness.

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