Darmmikrobiom – ein umfassender Leitfaden zu den Mikroorganismen des menschlichen Verdauungssystems
Emilia Szymańska
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Diets Premium Experte • 24.09.2026
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Wissenschaftlich geprüft durch klinische Ernährungsberater:
Der Inhalt dieses Artikels wurde gemäß den medizinischen Standards von IŻŻ, WHO und PTGiP klinisch geprüft.
| Diets Premium Experte Emilia Szymańska | Min. Lesezeit 8 min | Wissenschaftlich geprüft durch klinische Ernährungsberater 24.09.2026 |
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Wichtigste Fakten auf einen Blick
Jahrzehntelang galten Bakterien ausschließlich als Auslöser von Infektionen und wurden systematisch mit antimikrobiellen Substanzen sowie Desinfektionsmitteln bekämpft. Die moderne Wissenschaft zeigt jedoch, dass nur ein geringer Prozentsatz dieser Mikroorganismen tatsächlich krankheitserregend ist, während der Großteil essentielle Funktionen für die Aufrechterhaltung des biologischen Gleichgewichts im Körper erfüllt. Das mikrobiologische Ökosystem des Darms, bestehend aus einer Vielfalt bakterieller Stämme und mikroskopischer Pilze, repräsentiert ein regelrechtes "vergessenes Organ", dessen Bedeutung für die menschliche Physiologie wir erst allmählich vollständig begreifen. Daher ist es von großem Wert, die wichtigsten Erkenntnisse über die Mikrobiota zu vertiefen, um die Rolle dieser unsichtbaren Mitbewohner in unserem Verdauungstrakt sowie ihren Einfluss auf die allgemeine Gesundheit und das psychische Wohlbefinden besser zu verstehen.
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The small intestine is a multifunctional organ
Although most of us think of the small intestine as an organ involved in the digestion and absorption of nutrients after they pass through the stomach, few of us realize that its role in this does not end. In addition to its intra-intestinal function, the small gut is the most important organ of the immune system in the human body. About 80% of all immunoglobulins (proteins secreted during the immune response) are produced in the intestine, and at least 50% of all lymphocytes (composites of the body's immune system) are located in this same organ. Every day, the body is made up of bacteria and bacteria, which are fed to the body, but which are also fed through the microbial cell, which is not only the bacterial barrier, but also the immune cell.
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Bacteria inhabiting the gastrointestinal tract synthesize a number of essential vitamins: including vitamins B1, B2, B6, B12, and vitamin K, as well as short-chain fatty acids (SCFAs) such as acetate, propionate, and butyrate. These metabolites nourish the intestinal epithelium, stimulate gastrointestinal motility, and maintain mucosal barrier integrity. A robust microbiota actively suppresses opportunistic pathogens, such as Clostridium difficile, which can proliferate when natural microbial balance is disrupted. Furthermore, beneficial bacteria aid in the digestion of complex fibers and convert bile acids into secondary metabolites vital for human metabolic health.
The composition of the gut microflora
Although the gut microflora was a major mystery in the world of medicine only a few decades ago, today we know much more about its composition and the factors that influence it. It is worth knowing that the only period in which the gut is sterile and free of gut microbiota is fetal life. Immediately after birth, colonization of the gut begins by strains that first come into contact with the newborn organism. In this place, we know a very large role that the offspring play in the way that it is born. It also plays a more natural role in the acquisition of microorganisms present in the pathways of the mother's genes, which is more beneficial than the strains of those families in which they are born.
Diseases related to intestinal microflora disorders
The subtle imbalance of the gut microflora and the long-term condition of dysbiosis is often found to be an important trigger for the development of many diseases; however, studies have also shown that inflammatory bowel disease (IBS) in patients with IBS has both quantitative and qualitative impairments in comparison with healthy people. Researchers have found that the reduction or absence of autoimmune pathogens in breast cancer and biofbiotic bacteria, on the one hand, has been shown to significantly increase the effectiveness of anti-bacterial and anti-inflammatory pathogenic bacteria in the early stages of development. Studies have shown that the effects of antibodies to the disease are significantly increased by reducing the number of metabolic metabolic diseases in the body, as well as by increasing the ability of the body to regulate the body's metabolism.
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