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The balance of bacteria in the intestine: how microflora affects the health of the whole body
Inside our intestines lives a whole world - trillions of bacteria that form the microbiota. These are not just inhabitants of our body, but full-fledged partners involved in digestion, regulation of the immune system, synthesis of vitamins and even affecting brain function. The balance between beneficial and conditionally pathogenic bacteria determines how effectively the body works as a whole.
Disruption of this balance — dysbiosis — can have a wide range of manifestations: from bloating to depression. That is why it is so important to know how the intestinal microflora is arranged, how it can be studied and maintained in harmony.
What is intestinal microflora?
Microflora is a collection of microorganisms that inhabit the human digestive tract. Most of them are concentrated in the large intestine. Normally, beneficial bacteria (bifidobacteria and lactobacilli) predominate, inhibiting the development of conditionally pathogenic microbes and fungi.
Each person has an individual microbiota composition that is formed from birth. With age, under the influence of diet, medications, and lifestyle, this balance can change - both in the direction of health and vice versa.
Composition of intestinal microflora
| Group of microorganisms | Typical representatives | Role in the body |
|---|---|---|
| Beneficial bacteria | Bifidobacteria, lactobacteria | Vitamin synthesis, fiber fermentation, immune regulation |
| Conditionally pathogenic bacteria | Enterococci, clostridia, Escherichia coli (conditionally) | Can cause infections when immunity is reduced or there is a lack of beneficial flora |
| Pathogenic microorganisms | Salmonella, Shigella, pathogenic strains of E. coli | Cause intestinal infections, intoxication, inflammation |
| Fungi (yeast) | Candida albicans, other yeast-like fungi | Under normal conditions, they are harmless, but with dysbiosis, they cause candidiasis. |
| Prebiotics (not bacteria, but maintain balance) | Inulin, fructooligosaccharides, lactulose | Serve as "food" for beneficial flora, stimulating its growth |
Signs of bacterial imbalance
An imbalance of microflora can manifest itself in different ways. Often it is not one, but a combination of symptoms:
bloating, rumbling, frequent gas formation
unstable stool, alternating constipation and diarrhea
nausea, intolerance to certain foods
skin rashes, dryness, acne
frequent colds, decreased immunity
increased anxiety, insomnia
chronic fatigue syndrome
Such conditions are often associated with the "gut-brain axis" - a neurohumoral system of interaction between microbes and the nervous system.
Causes of microbiota disruption
uncontrolled use of antibiotics
unhealthy diet, fiber deficiency
stress, sleep disorders
hormonal disruptions, immunodeficiencies
infectious intestinal diseases
chemotherapy, radiation treatment
Even a short course of antibiotics can significantly alter the microbiota, suppressing beneficial strains for several weeks or months.
How to diagnose the state of microflora
The following studies are used to assess the balance of bacteria:
Stool analysis for microflora (sowing) — determines the number and ratio of bacteria
PCR analysis on microbiota — detects the genetic material of bacteria
Bacteriophage sensitivity testing or probiotics
Comprehensive microbiome profiles (in modern laboratories) - allow to assess not only the composition, but also the function of the microflora
How to restore bacterial balance
1. Nutrition
The main condition is a regular intake of fiber, which is food for beneficial bacteria:
vegetables, legumes, whole grains
fermented foods: kefir, yogurt, kimchi, sauerkraut
exclusions: sugar, excess animal protein, processed foods
2. Probiotics and symbiotics
Depending on the needs of the body, the following are used:
monostrains (one bacterium, e.g. Lactobacillus)
multicomponent probiotics (combination of lactobacilli, bifidobacteria, etc.)
symbiotics — a combination of probiotics with prebiotics
3. Prebiotics
Stimulate the growth of your own microflora. The most effective are:
inulin
lactulose
pectin
fructooligosaccharides
4. Bacteriophages
In the case of excessive growth of conditionally pathogenic bacteria, bacteriophages can be used - viruses that destroy a specific type of bacteria without harming the beneficial flora.
5. Stress management
Meditation, sleeping at least 7 hours, regular physical activity — all of this has been proven to help restore the intestinal microbiota.
Gut health is more than digestion
The balance of our microbiota not only affects how we digest our food, but it also shapes our immune system, inflammation levels, mood, and even our ability to fight disease. Making a daily choice in favor of our microbiota is a choice in favor of our health.
Bacterial balance is not a fad or a trend, it is the foundation of our daily well-being, energy, and resistance to disease. If you want to maintain your health, start with your gut.
