Often, we tend to see bacteria as invisible "enemies" that we must eliminate. However, modern science has radically changed this paradigm: far from being a threat, the trillions of bacteria, viruses, fungi, and archaea that reside mainly in your gastrointestinal tract are essential allies for your life.
The metabolic "organ" you didn't know you had
Current science no longer considers the microbiome as a simple collection of guests, but as another organ of our body.
This ecosystem is a highly dynamic metabolic organ that can weigh up to 2 kg—a weight comparable to that of your brain or your liver! Most surprising is its dynamism: this "organ" is not static; rather, its composition and weight constantly change depending on what you eat, your lifestyle, and your environment.
Your "second genome": You are more microbe than human
This is where the numbers become truly astounding. While your human DNA is fixed and unchangeable, your microbiome provides what we call a "second genome." This collection of microorganisms contains 150 times more genes than the human genome.
The great news is that, unlike your human genes, this "second genome" is in your hands with a gut microbiome test: you can modify, nourish, and optimize it through your daily habits.
Beyond digestion: Impact on your global health
The microbiome exerts a direct influence on vital processes that go far beyond simple digestion. Its functions include:
- Digestion and nutrition: It is essential for breaking down fiber, aiding in nutrient absorption, and producing essential vitamins.
- Immunity: Given that 70% of the immune system resides in the gut, the microbiome acts as an expert trainer for your defenses.
- Gut-brain axis: There is a direct connection between your bacteria and your mind. They influence the production of neurotransmitters, such as serotonin, affecting your mood and your stress management.
- Cardiovascular health: Its balance influences systemic inflammation, cholesterol levels, and ultimately, the health of your heart.
The microbiome is not just a part of you; it is a fundamental pillar of your overall well-being. However, the only way to improve this "second genome" is by first knowing what state it is in.