The gut-brain axis is not only a connection between organs and microorganisms, but also a complex neurochemical communication network. Contrary to the widespread belief that neurotransmitters are produced solely in the brain, about 90% of the happiness hormone serotonin and other important neurotransmitters such as dopamine and GABA are produced in the gut – thanks to specialized gut bacteria.
Serotonin – The Happiness Hormone
Serotonin ensures good mood, sleep quality, flexibility, and a balanced state of mind. Bacteria such as *Bifidobacterium infantis* contribute to the formation of the serotonin building block tryptophan. A lack of serotonin can manifest as depressive mood, sleep problems, and stress, which is why gut health has a direct influence on mental stability.
Dopamine – Motivation and Drive
Dopamine controls motivation, reward behavior, and focus. Although most of it is produced in the brain, the gut flora positively influences dopamine metabolism, which is important for achieving sporting goals and mental strength.
GABA – Calm and Relaxation
The inhibitory neurotransmitter GABA helps to reduce stress and promotes restful sleep. Its synthesis takes place largely in the gut, which underlines the importance of a healthy microbiome for mental regeneration.
Why is this important for athletes?
Mental strength, motivation, and restful sleep are crucial success factors in training and competition. An intact gut microbiome supports the production of these neurotransmitters, helps to better process stress, and optimizes regeneration.
Conclusion
The bacteria in your gut are silent helpers that control crucial neurochemical processes for your mental balance and athletic performance. With a healthy gut flora, you strengthen not only your body, but also your mind.
Sources
What is the Gut-Brain Axis? Basics & Significance for ... https://www.sportbrennstoff.com/blogs/magazin/was-ist-die-gut-brain-axis-grundlagen-bedeutung-fur-sportler
Exercise influences the microbiome-gut-brain axis - PMC https://pmc.ncbi.nlm.nih.gov/articles/PMC6748614/
The microbiota-gut-brain axis regulates motivation for ... https://pmc.ncbi.nlm.nih.gov/articles/PMC10264927/
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