The gut is far more than just the place where food is digested. It’s a fascinating ecosystem inhabited by trillions of microorganisms – and it plays a key role in health, even in children. From the immune system to the skin, mood, and overall well-being: the gut is the center where many things are decided. In this article, we explain why your children’s gut health deserves special attention.
The great journey of tiny gut inhabitants begins at birth. Before birth, a baby’s gut is sterile – it contains hardly any bacteria. This changes abruptly: during birth, while breastfeeding, and through initial contact with the environment, bacteria gradually colonize. All microorganisms together form the so-called microbiome – a living community that strengthens the body from within.
The type of birth has a major influence on the initial composition of the microbiome. In vaginally born babies, the gut is first colonized by the flora of the birth canal. In babies born by C-section, bacteria from the mother’s skin flora initially take on this role – a difference that evens out over time. Another important factor comes into play with breastfeeding: breast milk primarily transfers the lactic acid bacterium Lactobacillus bifidus, which actively supports the development of healthy gut flora.
In the first years of life, bacterial diversity changes particularly rapidly. Diet, environmental factors, and medications like antibiotics influence which bacteria establish themselves. By school age, the gut flora increasingly resembles that of adults – but remains more sensitive to external influences. Children who eat a varied diet, spend a lot of time outdoors, and regularly come into contact with natural environmental influences naturally promote this diversity.
The gut flora – also known as the microbiome – in a healthy adult consists of several trillion bacteria living in the digestive tract. It comprises around 20 different bacterial strains with more than 10,000 species; on average, each person harbors about 500 different species in their gut. However, unlike a fingerprint, the microbiome is not static – it changes continuously throughout life.
Natural gut bacteria include:
The microbes have different functions and occur in different compositions depending on the section of the intestine – small or large intestine. Children’s gut flora is less stable and diverse than that of adults and can be more easily thrown out of balance by diet, illness, or medication.
The microorganisms in the gut do far more than just digest food. They help break down hard-to-digest food components, support the utilization of fiber, and produce important vitamins – including vitamin K, which plays a central role in blood clotting.
Furthermore, the gut flora is a central component of the immune system: around 70 percent of all immune cells are located in the gut. Gut bacteria influence the development and function of the immune system and, by their mere presence, protect against harmful germs settling.
A balanced microbiome trains the immune system to remain tolerant of harmless substances like pollen or food components – while simultaneously reacting appropriately to pathogens. If this balance is disrupted, for example, by frequent infections, stress, or an unbalanced diet, the immune system can overreact. This can manifest as allergies, skin problems, or frequent colds.
Did you know?
Breast milk is rich in prebiotics. Experts therefore recommend breastfeeding babies whenever possible to support the development of healthy gut flora. In cases where breastfeeding is not possible or not an option, there are alternatives in the form of baby formula enriched with important prebiotics.
The gut is directly connected to the brain via the so-called gut-brain axis. This connection works through nerve pathways, neurotransmitters, and certain gut bacteria that influence happiness hormones like serotonin. A healthy gut can help children be more emotionally balanced, stress-resistant, and in a better mood.
Sleep is also closely linked to gut flora: studies show that certain types of bacteria can positively influence sleep quality. And even on the skin – the largest organ of our body – the microbiome has an effect: a healthy gut can reduce the risk of neurodermatitis, eczema, or impure skin.
inne® Microbiome Balance
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There are various ways to actively support the development of children’s gut flora.
Nutrition A balanced and varied diet with plenty of fruits, vegetables, and whole grains provides important minerals, vitamins, and fiber – the foundation for healthy gut flora.
Prebiotics and Probiotics Prebiotics – found in bananas, onions, or garlic, for example – are substances that promote the growth of “good” gut bacteria. They serve as food for beneficial bacteria and help build a healthy microbiome. Probiotics are living microorganisms found, for example, in yogurt, kefir, or fermented vegetables like sauerkraut. They are also available as ready-made preparations from pharmacies and can directly support the function of the body’s own gut flora.
Did you know? Breast milk is rich in prebiotics. Experts therefore recommend breastfeeding babies whenever possible to promote the development of healthy gut flora. If breastfeeding is not possible, there are baby formula alternatives specifically enriched with important prebiotics.
Lifestyle Good hygiene is important – but excessive cleanliness can hinder the natural development of gut flora. Frequent washing with soaps in the intimate and anal areas, for example, decimates beneficial bacteria that influence gut flora.
Regular physical activity has been shown to have a positive effect on gut health – especially in children whose microbiome is still developing. And because stress measurably burdens the gut flora, relaxation exercises and sufficient sleep help maintain balance.
In children, especially during kindergarten age, diarrhea due to viral or bacterial gastrointestinal infections, as well as constipation, are common companions. Such illnesses – including chronic ones – can permanently alter the composition of the gut flora and weaken the microbiome. After an infection, probiotics can help rebuild the gut flora quickly. However, pediatric consultation is recommended before using probiotic preparations, as products vary significantly in composition, dosage, and effect.
Antibiotics are sometimes necessary – for bacterial infections, for example. However, they not only attack harmful bacteria but can also decimate the “good” gut inhabitants. The consequence: digestive problems like diarrhea, bloating, or constipation, and long-term increased susceptibility to infection. Antibiotics should therefore only be used under medical supervision. After therapy, prebiotic and probiotic foods or supplements help rebuild the gut flora.
The gut is the core of children’s health. When parents understand how closely the gut, immune system, and well-being are linked in their children, they can provide targeted support – with fresh, fiber-rich nutrition, sufficient exercise, rest periods, and as little stress as possible. Responsible use of antibiotics and the targeted use of pre- and probiotics complete this foundation. This creates a stable basis that strengthens children from within and helps them grow up healthy, balanced, and resilient.
