The gut-brain axis
It may sound unbelievable, but your gut and your brain are in constant communication. Scientists even refer to the gut as the “second brain” due to its vast network of over 100 million nerve cells, known as the enteric nervous system (ENS), which runs along the entire digestive tract.
The ENS is a powerful and often overlooked part of our biology, with extraordinary abilities that continue to surprise scientists.
How lifestyle affects gut flora
Over the past 50 years, dramatic lifestyle changes have altered the diversity of our gut microbiota. Increased urbanisation, new eating habits, and modern hygiene practices have had a profound impact.
Several key factors contribute to an imbalance in gut flora:
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Overuse of antibiotics and other medications – Antibiotics eliminate all bacteria, including the friendly ones essential for maintaining a balanced microbiota.
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Obsessive hygiene – While cleanliness is important, excessive use of antibacterial soaps, detergents, and hand sanitisers can deplete microbial diversity.
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Poor eating habits – Diets high in processed foods, fast food, and excessive caffeine or alcohol fail to nourish gut bacteria, which thrive on fibre, fresh fruits, and vegetables.
- Chronic stress and sleep deprivation – Stress and lack of sleep can negatively impact gut microbiota composition and reduce microbial diversity.
Maintaining a healthy gut
The good news is that we can take steps to maintain a diverse microbiota through simple lifestyle choices:
- Eat a varied, fibre-rich diet with plenty of fruits and vegetables to nourish gut bacteria.
- Prioritise restful sleep to allow the microbiota to restore and balance itself.
- Engage in daily movement, especially outdoors, to support gut diversity.
- Manage stress with mindfulness practices, breathing exercises, and relaxation techniques.
- Consider a daily probiotic supplement to help maintain gut diversity.
By making conscious choices, we can nurture the incredible ecosystem within us, allowing our microbiota to thrive.
