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The gut microbiome: how bacteria affect health and why it's important to maintain balance

What is the gut microbiome and why is it important?
The gut microbiome is a complex ecosystem of microorganisms that inhabit the human gastrointestinal tract. It includes billions of bacteria, viruses, fungi, and other microbes that play important roles in digestion, immune defense, and even the functioning of the nervous system.
The state of the microbiome affects:
- nutrient absorption
- immune system function
- mental health and stress levels
- metabolism and weight
- skin condition and energy level
An unbalanced microbiome can cause health problems such as irritable bowel syndrome, inflammation, allergic reactions, and even depression.
Functions of the gut microbiome
1. Improving digestion
Beneficial bacteria help break down food, synthesize enzymes, and promote the absorption of nutrients such as vitamins B12 and K.
2. Immunity support
About 701,000 immune cells are located in the gut. Beneficial microorganisms help fight pathogens and prevent inflammation.
3. Production of neurotransmitters
The microbiome affects levels of serotonin, the happiness hormone. An imbalance of bacteria can cause increased anxiety and depression.
4. Metabolic regulation
Intestinal microorganisms participate in metabolic processes, affect blood sugar levels and weight.
5. Protection against inflammation
Some bacteria produce short-chain fatty acids that reduce inflammation and support the health of the intestinal wall.
What disrupts the balance of the microbiome?
Negative factors that can affect the composition of microflora:
- Improper nutrition – excessive consumption of sugar, processed foods, alcohol
- Antibiotics – destroys not only harmful but also beneficial bacteria
- Chronic stress – affects the relationship between the brain and the gut
- Insufficient fiber intake – fiber is food for beneficial bacteria
- Lack of sleep – affects the regulation of microflora
How to check the state of the microbiome?
Laboratory tests are used to assess the state of the intestinal microflora, which help determine the balance between beneficial and pathogenic bacteria.
Basic tests for assessing the gut microbiome
| Analysis method | What determines | Who is recommended? |
| Stool analysis for dysbacteriosis | Determines the level of beneficial and pathogenic bacteria | People with digestive problems, allergies, frequent infections |
| Metagenomic analysis (NGS diagnostics) | Allows for detailed assessment of the entire spectrum of microorganisms | Patients with chronic gastrointestinal diseases |
| Analysis for short-chain fatty acids | Determines the level of metabolic products of bacteria | People with inflammatory bowel disease |
| Intestinal wall permeability test | Detects "leaky gut syndrome"« | Patients with autoimmune or allergic diseases |
How to maintain a healthy microbiome?
A healthy lifestyle and balanced diet can significantly improve the condition of the intestinal microflora.
1. Include probiotics in your diet
Beneficial bacteria are found in fermented foods:
- kefir
- yogurt
- sauerkraut
- miso, tempeh
2. Take prebiotics
These are substances that feed beneficial bacteria:
- onion, garlic
- bananas
- asparagus
- oatmeal
3. Avoid excess sugar and processed foods
Sugar and trans fats promote the growth of harmful bacteria and fungi (Candida).
4. Control your stress levels
Stress negatively affects the balance of microflora, so it is worth practicing meditation, physical activity, and healthy sleep.
5. Eat enough fiber
Fiber promotes the growth of beneficial bacteria and normalizes digestion.
Where can I get a gut microbiome test done?
In the laboratory Medilab Plus You can undergo comprehensive testing of your intestinal microflora and receive professional recommendations for improving your health.
Advantages of testing at Medilab Plus
- Using modern diagnostic methods
- High accuracy of analyses and detailed interpretation of results
- Consultation with doctors on diet and lifestyle correction
A healthy microbiome is the foundation of strong immunity, energy, and well-being. Take care of the balance of intestinal microflora and undergo regular diagnostics!

