innerbuddies gut microbiome testing

Gut Microbiome and Low Mood: How Your Microbiome May Affect Depressive Symptoms

Low mood and depressive symptom burden are influenced by far more than willpower or stress alone. A growing body of gut microbiome research suggests that the trillions of microbes living in your digestive tract can affect brain function through the gut–brain axis—sending chemical and immune signals that may shape mood, stress reactivity, and emotional resilience.

One of the most discussed pathways involves inflammation. When the gut environment is imbalanced (often termed dysbiosis), it can promote higher levels of inflammatory signaling—such as cytokines—which have been linked to depressive symptoms. Microbiome changes may also influence the availability of neurotransmitter-related compounds (or the precursors used to make them), including pathways tied to serotonin, GABA, and dopamine. In addition, gut microbes produce short-chain fatty acids (SCFAs) like butyrate that help support the intestinal barrier and regulate immune responses—processes that may indirectly impact mental well-being.

The encouraging part: your microbiome is dynamic. Diet patterns rich in diverse plant fibers and fermented foods can support beneficial microbial activity, encourage SCFA production, and promote a healthier gut lining. Targeting gut health through nutrition, sleep consistency, and stress management may help create a more supportive microbial environment—one that research suggests could complement broader approaches to improving low mood and emotional well-being.

innerbuddies gut microbiome testing

Krótkie podsumowanie

Low mood / depressive symptom burden

Low mood and depressive symptom burden are common and may be influenced by the gut microbiome through gut–brain signaling via the vagus nerve, microbial metabolites such as short-chain fatty acids, and immune/stress-response pathways. Inflammation and tryptophan–serotonin metabolism, along with gut barrier integrity, are key mechanisms. Although findings are largely associative and vary across individuals, modulating gut ecology with fiber‑rich, diverse plant foods, fermented options when tolerated, adequate sleep, stress management, and regular physical activity is plausibly beneficial as an adjunct to evidence‑based mental health care.

Clinically, depressive symptoms often coexist with gastrointestinal discomfort, fatigue, brain fog, sleep disturbance, and irritability. Microbiome patterns linked to mood typically involve reduced diversity and altered metabolite production, with some profiles linked to pro‑inflammatory signaling; however, there is no universal biomarker. Practical microbiome‑supportive strategies focus on dietary diversity and fiber, mindful use of fermented foods, and lifestyle factors that shape the gut ecosystem, aiming to ease symptom burden alongside standard mental health treatment.

Testing the gut microbiome can provide contextual insights without diagnosing depression, highlighting diversity, beneficial metabolite producers, or inflammatory potential to guide personalized, tolerable interventions and track mood-related changes over time. The InnerBuddies test is presented as a tool to illuminate gut–brain pathways, helping tailor lifestyle adjustments that align with an individual’s microbial ecology while complementing professional care.

innerbuddies gut microbiome testing

Kluczowe wnioski

  1. Butyrate-producing anti-inflammatory taxa (Faecalibacterium prausnitzii, Roseburia spp., Coprococcus spp., Eubacterium rectale) support gut barrier integrity and SCFA signaling implicated in mood regulation.
  2. Beneficial taxa such as Bifidobacterium spp. and Akkermansia muciniphila are often reduced in dysbiosis and help modulate immune responses and barrier function related to depressive symptoms.
  3. Pro-inflammatory dysbiosis marked by Enterobacteriaceae (Escherichia-Shigella), Streptococcus, Ruminococcus gnavus group, Collinsella, and Prevotella can elevate systemic inflammation linked to mood changes.
  4. Short-chain fatty acid biosynthesis, especially butyrate production, is a key metabolic pathway connecting gut ecology to brain signaling and stress resilience.
  5. Tryptophan metabolism by gut microbes can alter serotonin-related substrates, linking microbial ecology to mood regulation.
  6. Disrupted gut barrier (leaky gut) and increased permeability allow inflammatory signals to influence brain–immune communication and depressive symptom burden.
  7. Bidirectional gut–brain signaling via the vagus nerve and HPA axis conveys microbial cues to the brain, affecting emotion and stress responses.
innerbuddies gut microbiome testing

Przegląd schorzenia

Depression-related symptoms - Low mood / depressive symptom burden

Low mood and depressive symptom burden are common and can be influenced by a wide range of biological, psychological, and environmental factors. In recent years, gut microbiome research has highlighted a potential gut–brain connection: the trillions of microbes in your intestines may affect mood through signaling pathways involving the vagus nerve, microbial metabolites (such as short-chain fatty acids), and immune and stress-response regulation. When these signals shift—whether due to diet, antibiotics, illness, chronic stress, or disrupted sleep—some people may experience changes in how they feel emotionally.

A key area of study is inflammation. Certain microbiome patterns can promote a more inflammatory state, and inflammation is increasingly recognized as a contributor to depressive symptoms in subsets of people. Gut microbes can also influence neurotransmitter-related pathways, including tryptophan metabolism (which helps regulate serotonin availability and related metabolites), as well as the integrity of the gut barrier. When the intestinal barrier is less resilient (“leaky gut” concept) or when microbial balance is disrupted (dysbiosis), pro-inflammatory signals and gut-derived compounds may more readily impact the brain and affect mood regulation.

Not all individuals with low mood have the same microbiome profile, and the research is still evolving—many findings are associations, and not everyone will respond the same way. Still, practical microbiome-supportive strategies are biologically plausible: increasing dietary fiber and diverse plant foods to feed beneficial microbes, choosing fermented foods when tolerated, and considering lifestyle factors that shape the gut ecosystem (sleep consistency, stress management, regular physical activity). Together, these approaches may help support gut ecology and—through gut–immune–brain signaling—reduce depressive symptom burden for some people, especially when used alongside evidence-based mental health care.

innerbuddies gut microbiome testing

Najczęstsze objawy

  • Persistent low mood or sadness
  • Reduced interest or pleasure in everyday activities (anhedonia)
  • Low energy and fatigue
  • Sleep disturbances (insomnia or oversleeping)
  • Appetite changes or cravings (especially for high-sugar/high-fat foods)
  • Increased irritability or emotional reactivity
  • Brain fog or difficulty concentrating
  • Gastrointestinal discomfort (e.g., bloating, abdominal pain, constipation/diarrhea) alongside mood changes
innerbuddies gut microbiome testing

Dla kogo jest to istotne?

This may be relevant for people experiencing persistent low mood or depressive symptom burden that seems to fluctuate with gut and lifestyle changes—for example, mood shifts during or after antibiotic use, gastrointestinal illness, major dietary changes, or periods of chronic stress and poor sleep. It can also be relevant for those whose depressive symptoms include low energy, irritability, or brain fog, and who notice a pattern where emotional well-being and digestive comfort move together.

It may be especially relevant for individuals who report gastrointestinal symptoms alongside mood changes—such as bloating, constipation or diarrhea, abdominal discomfort, or appetite/craving changes that skew toward high-sugar or high-fat foods. Because the gut–immune–brain pathway is thought to connect microbial balance with inflammation, it may also resonate for people who feel that inflammation-like features accompany their mood symptoms (e.g., feeling “off,” generally unwell, or emotionally reactive during times of disrupted digestion).

This approach can also fit those who want biologically plausible, supportive steps alongside evidence-based mental health care. It may be relevant for people open to improving gut ecology through practical diet and lifestyle strategies—like increasing fiber and diverse plant foods, adding fermented foods if tolerated, and stabilizing sleep and activity patterns—particularly when they have reason to suspect dysbiosis (for example, recurrent GI issues, irregular eating patterns, or longstanding sleep disruption).

innerbuddies gut microbiome testing

Podsumowanie częstości występowania

Low mood and depressive symptom burden are extremely common worldwide and affect a broad range of people—both those who meet full criteria for major depressive disorder and those with subthreshold or intermittent symptoms. In population surveys, the typical 12‑month prevalence of depressive disorders is roughly ~5% (with lifetime prevalence around ~10–20% depending on the country and methodology). Rates increase in periods of chronic stress, illness, poor sleep, or major life disruption, which are also factors known to shift the gut microbiome through changes in diet, circadian rhythm, inflammation, and gut–brain signaling.

Among people who don’t receive a formal diagnosis, clinically relevant depressive symptoms are also widespread. Large community studies using symptom scales (e.g., PHQ‑9 or similar) often find that on the order of 5–15% of adults report moderate to severe depressive symptoms in a given year, while additional individuals report milder symptoms that still contribute to reduced functioning and quality of life. This “symptom burden” varies by age, sex, socioeconomic status, comorbid anxiety, and physical health conditions; notably, gastrointestinal discomfort (such as bloating or altered bowel habits) frequently co-occurs with mood symptoms, suggesting overlapping gut–immune–brain influences.

Gut–brain mechanisms are an emerging lens on why depressive symptoms may be more common in certain contexts. Because factors like antibiotic exposure, dietary patterns low in fiber, irregular sleep, chronic stress, and inflammatory states can alter gut microbial composition and metabolite profiles, individuals experiencing these stressors may be at higher risk for persistent low mood or worsening symptom burden. While exact percentages specifically linking microbiome patterns to low mood are not yet established (most evidence is associational), the overall prevalence of depressive symptoms is high enough that gut-targeted lifestyle strategies—such as increasing dietary diversity and fiber, improving sleep consistency, managing stress, and using fermented foods when tolerated—are increasingly viewed as potentially supportive for a substantial subset of people, alongside evidence-based mental health care.

innerbuddies gut microbiome testing

Gut Microbiome & Low Mood: How Your Microbiome May Affect Depressive Symptoms

Low mood and depressive symptom burden are common, and emerging gut microbiome research suggests a possible gut–brain connection. The trillions of microbes in the intestines communicate with the brain through pathways that include the vagus nerve, microbial metabolites (such as short-chain fatty acids), and immune and stress-response signaling. When gut microbial communities are altered—due to factors like diet changes, antibiotics, illness, chronic stress, or disrupted sleep—these signaling patterns may shift and influence emotional regulation in vulnerable individuals.

Inflammation is one of the most studied mechanisms linking the microbiome to depressive symptoms. Some microbiome profiles appear more likely to promote a pro-inflammatory state, and inflammation is increasingly recognized as contributing to depression in certain people. Gut microbes also interact with neurotransmitter-related pathways, including tryptophan metabolism (which affects serotonin-related processes), and they help maintain the gut barrier. If the intestinal barrier becomes less robust (often described as “leaky gut”) or microbial balance is disrupted, inflammatory compounds and other gut-derived signals may more easily reach systems that influence the brain and mood.

Clinically, this link may be reflected in common co-occurring symptoms such as fatigue, sleep disturbance, brain fog, irritability, and appetite changes—alongside gastrointestinal discomfort like bloating, constipation/diarrhea, or abdominal pain. While research is still evolving and findings are often associative (and not everyone responds the same way), practical microbiome-supportive strategies are biologically plausible. Supporting gut ecology through increased dietary fiber and diverse plant foods, tolerating fermented foods, and improving sleep consistency, stress management, and regular physical activity may help reduce depressive symptom burden for some people—especially when paired with evidence-based mental health care.

innerbuddies gut microbiome testing

Zaangażowane mechanizmy

  • Microbial metabolite signaling (e.g., short-chain fatty acids like butyrate) that influences brain function, neuroinflammation, and stress-resilience pathways
  • Immune modulation and pro-/anti-inflammatory balance, where altered gut communities can shift cytokine signaling associated with depressive symptoms
  • Gut barrier integrity (tight junctions/mucus layer), where reduced barrier function can increase translocation of inflammatory molecules, amplifying brain–immune signaling
  • Tryptophan metabolism and neurotransmitter-related pathways, where gut microbes and their metabolites can alter serotonin availability and downstream mood-regulating signaling
  • Vagus nerve communication, where gut microbial signals can modulate afferent vagal pathways that regulate emotion, stress responses, and autonomic balance
  • HPA axis (stress-response) regulation and endotoxin-mediated effects, where dysbiosis can influence cortisol dynamics and related inflammatory/behavioral outcomes
  • Oxidative stress and microbial redox signaling, where dysbiosis may increase oxidative stress that can affect neural function and depressive symptom burden
innerbuddies gut microbiome testing

Wyjaśnienie mechanizmów

Low mood and depressive symptom burden may be influenced by bidirectional communication between the gut microbiome and the brain, often described as a gut–brain axis. Trillions of intestinal microbes produce bioactive compounds that can signal to the nervous system through multiple routes. For example, microbial metabolites such as short-chain fatty acids (including butyrate) can affect brain function, stress resilience, and neuroinflammatory signaling, while gut-derived cues can also interact with neurotransmitter-related processes—particularly tryptophan metabolism, which can influence serotonin-related pathways.

Inflammation is one of the best-studied mechanisms connecting gut ecology to depressive symptoms. Changes in microbiome composition can shift immune balance toward a more pro-inflammatory state by altering cytokine signaling, which is increasingly recognized as contributing to depressive symptoms in some individuals. Dysbiosis may also weaken gut barrier integrity—disrupting tight junctions and the protective mucus layer—so inflammatory molecules and microbial components are more likely to cross into circulation and amplify brain–immune communication. This can show up clinically alongside common depressive-associated features such as fatigue, brain fog, irritability, and sleep or appetite changes, sometimes co-occurring with gastrointestinal discomfort.

Several additional pathways may further connect gut changes to mood, including vagus nerve signaling and stress biology. Microbial metabolites and inflammation can modulate afferent vagal pathways that influence emotion, autonomic balance, and stress responses. Dysbiosis may also affect HPA axis regulation (cortisol dynamics), partly through endotoxin-mediated effects and related inflammatory signaling. Finally, microbial redox chemistry and oxidative stress may play a role: altered microbial communities can increase oxidative stress, which can impair neural function and contribute to depressive symptom burden. Because these mechanisms are probabilistic and vary across individuals, gut-supportive strategies are most plausible as adjuncts to evidence-based mental health care.

innerbuddies gut microbiome testing

Podsumowanie wzorców mikrobiologicznych

Low mood and depressive symptom burden have been associated in the emerging literature with gut microbial imbalance (often described as dysbiosis) and reduced ecological stability. In many studies, people with higher depressive symptom loads show differences in relative abundance across bacterial groups and reduced diversity, alongside shifts in microbial metabolic outputs that normally help support gut and brain signaling. Because the gut–brain axis relies on microbial metabolites—especially short-chain fatty acids like butyrate—patterns that reduce beneficial fermentation activity may be linked with weaker signaling to pathways involved in stress resilience, neuroinflammation regulation, and emotional processing.

Inflammation-linked microbial patterns are also commonly discussed as a potential bridge between gut ecology and depressive symptoms. Some profiles appear more likely to promote a pro-inflammatory immune tone, including through altered production or handling of microbial components that can stimulate cytokine signaling. Dysbiosis can coincide with impaired gut barrier function, where disruption of the mucus layer and tight-junction integrity makes immune activation more likely. Clinically, this inflammation-prone gut environment may align with co-occurring symptoms such as fatigue, brain fog, sleep disturbance, irritability, and appetite changes, sometimes alongside gastrointestinal complaints like bloating or altered bowel habits.

Beyond immune signaling, depressive symptom burden has been linked—probabilistically—to microbiome-driven effects on neuroactive pathways and stress biology. Microbial communities influence tryptophan metabolism and related neurotransmitter-adjacent metabolites, meaning certain gut patterns may alter substrate availability for serotonin-related processes or other mood-relevant metabolites. Additional associations have been proposed via vagus nerve signaling, HPA-axis (cortisol) regulation, and increased oxidative stress when microbial redox chemistry shifts. Together, these findings support the idea that the “typical” microbial pattern is less about one single species and more about a constellation of lower diversity, altered metabolite production, and greater inflammatory signaling potential, which may vary substantially between individuals.

innerbuddies gut microbiome testing

Niski poziom korzystnych taksonów

  • Faecalibacterium prausnitzii (butyrate-producing; anti-inflammatory)
  • Roseburia spp. (butyrate producers; supports colonic barrier and reduced inflammation)
  • Coprococcus spp. (SCFA-associated ecology; linked to healthier gut metabolite profiles)
  • Bifidobacterium spp. (often reduced in dysbiosis; supports gut barrier and immune modulation)
  • Akkermansia muciniphila (mucus-layer/epithelial support; typically lower with impaired barrier function)
  • Eubacterium rectale (butyrate/SCFA support; associated with improved gut homeostasis)
innerbuddies gut microbiome testing

Podwyższone / nadreprezentowane taksony

  • Enterobacteriaceae (e.g., Escherichia-Shigella)
  • Streptococcus
  • Ruminococcus gnavus group
  • Collinsella
  • Prevotella (certain Prevotella-rich enterotypes)
innerbuddies gut microbiome testing

Zaangażowane szlaki funkcjonalne

  • Short-chain fatty acid (SCFA) biosynthesis—especially butyrate/propionate pathways that support colonic barrier integrity and gut–brain signaling
  • Microbial carbohydrate fermentation and fiber utilization—driving microbial ecological stability and metabolite output (SCFAs and related neuroactive-supporting compounds)
  • Tryptophan metabolism toward indole-related and serotonin-adjacent metabolites—modulating mood-relevant signaling and inflammatory tone
  • Lipopolysaccharide (LPS) and other microbial component handling—altered membrane/outer-membrane metabolism that can increase pro-inflammatory immune activation
  • Bacterial fermentation of mucins and epithelial-supporting ecology—affecting mucus-layer dynamics and barrier function (vital for reducing immune stimulation)
  • Gut barrier and tight-junction supportive metabolite production—functional output that influences epithelial permeability and neuroinflammation risk
  • Redox and oxidative stress metabolism—shifts in microbial redox chemistry that can increase oxidative stress signals linked to depressive symptoms
  • Modulation of bile acid metabolism—secondary bile acid pathways that influence inflammation, gut signaling, and stress-resilience-related physiology
innerbuddies gut microbiome testing

Uwaga dotycząca różnorodności

Research increasingly links low mood and higher depressive symptom burden with changes in gut microbial diversity and ecological stability. Across studies, individuals with greater depressive symptoms often show reduced overall species richness and lower within-community diversity, alongside a pattern of less resilient microbial ecosystems that may be more easily disrupted by diet, stress, antibiotics, illness, and sleep variability. Rather than pointing to a single “depression-causing” microbe, the signal typically reflects a broader shift in community composition—where beneficial groups that support stable fermentation and gut barrier function become less represented.

These diversity reductions are frequently accompanied by changes in microbial metabolic outputs, especially the production of short-chain fatty acids (SCFAs) such as butyrate, which are generated through fermentation of dietary fibers. When microbial diversity is lower, the community may be less capable of converting fibers into metabolites that support intestinal lining health, regulate immune signaling, and modulate gut–brain communication. That metabolic shift can coincide with a more pro-inflammatory immune tone and weaker regulation of pathways involved in emotional processing and stress responsiveness.

Clinically relevant co-occurring symptoms (e.g., sleep disturbance, fatigue, brain fog, irritability, or bowel habit changes) often appear in parallel with these microbiome diversity patterns. Mechanistically, lower diversity and less stable communities are associated with impaired barrier integrity and altered handling of microbial components that can promote immune activation. Over time, this gut–immune–brain signaling environment may contribute to (or intensify) depressive symptom burden in susceptible individuals, highlighting why diversity-supportive strategies—like increasing fiber variety and maintaining consistent sleep and stress routines—are often discussed as microbiome-relevant adjuncts to evidence-based mental health care.



Poniżej znajduje się lista najważniejszych publikacji medycznych związanych z tym konkretnym schorzeniem.

Title Journal Year Link
Vaginal microbiome and maternal mood?—No: Gut microbiota and depression: a systematic review and meta-analysis of observational studies and clinical trials Translational Psychiatry 2020
Randomized controlled trial of probiotics for depressive symptoms: gut microbiota-related psychobiotics Journal of Psychiatric Research 2014
Microbiota-driven activation of innate immune responses and behavior in mice Science 2014
Germ-free mice show altered behavior and neurochemistry relevant to depression Psychoneuroendocrinology 2011
Microbiota modulate the neuroendocrine system and behavior in mice Gastroenterology 2011
Czym jest oś jelito-mózg i jak może wpływać na nastrój?
Oś jelito-mózg opisuje dwukierunkową komunikację między mikrobiomem jelitowym a mózgiem. U niektórych osób sygnały mikrobiologiczne i stan zapalny mogą wpływać na nastrój, energię, sen i reakcje na stres. To nie diagnoza i efekt może różnić się między osobami.
Co to jest dysbioza i dlaczego może być związana z objawami depresyjnymi?
Dysbioza to zaburzenie składu mikrobiomu jelitowego. Niektóre wzory wiążą się z większym stanem zapalnym lub osłabioną barierą jelitową, co może korelować z zmianami nastroju u niektórych osób. Nie jest to uniwersalne.
Czym są krótkołańcuchowe kwasy tłuszczowe (SCFA) i dlaczego są ważne dla nastroju?
SCFA to metabolity wytwarzane przez mikroby jelitowe, które pomagają w utrzymaniu bariery jelitowej i mogą modulować sygnały do mózgu i stan zapalny. To tylko jeden element skomplikowanego systemu i nie przewidują nastroju u wszystkich.
Co oznacza 'przeciekające jelito' i czy udowodniono wpływ na nastrój?
"Przeciekające jelito" odnosi się do obniżonej integralności bariery jelitowej. Istnieją dowody, że funkcja bariery może wpływać na stan zapalny, który bywa związany ze zmianami nastroju u niektórych osób, ale przyczyna nie jest jasna.
Które bakterie jelitowe wiążą się z lepszym nastrojem, a które z inflamacją?
Korzystne wzory często obejmują producentów krótkołańcuchowych kwasów tłuszczowych, takich jak Faecalibacterium i Roseburia; wzory związane z inflamacją mogą obejmować różne rodziny. Zmienność jest duża.
Czy test mikrobiomu może zdiagnozować depresję lub powiedzieć, co powoduje moje objawy?
Nie. Testy mikrobiomu nie diagnozują depresji. Mogą dostarczać kontekstu, gdy używane są wraz z opieką kliniczną.
Jak mocne są dowody na to, że mikrobiom wpływa na nastrój?
Dowody rosną, ale są głównie korelacyjne i zmienne między osobami. Istnieją plausowne mechanizmy, ale nie ustanawiają uniwersalnych wytycznych.
Jakie praktyczne kroki mogą pomóc wspierać zdrowie jelit i potencjalnie nastrój?
Dieta bogata w błonnik i różnorodne rośliny; rozważ fermentowane produkty, jeśli tolerowane; utrzymuj regularny sen i zarządzanie stresem; ćwicz regularnie. Te działania wspierają ekologię jelit i ogólne samopoczucie.
Jak dieta i błonnik wpływają na mikrobiom i nastrój?
Dieta kształtuje różnorodność mikrobiomu i produkcję metabolitów; błonnik karmi korzystne bakterie i może wspierać barierę jelitową oraz sygnalizację do mózgu. Wyniki różnią się.
Jak sen, stres i ćwiczenia wpływają na oś jelito-mózg?
Sen, stres i aktywność fizyczna mogą modyfikować skład mikrobiomu i stan zapalny, wpływając na nastrój przez sygnały między jelitem a mózgiem. Zrównoważone rutyny pomagają.
Czy powinienem zrobić test mikrobiomu, jeśli mam objawy depresyjne?
Test może być częścią ogólnego planu opieki, ale nie zastępuje leczenia opartego na dowodach. Skonsultuj się z lekarzem.
Jak wykorzystać wyniki testu w współpracy z zespołem opieki zdrowotnej?
Wykorzystaj wyniki, aby prowadzić rozmowy o diecie, śnie, stresie i monitorowaniu objawów z lekarzem. Wyniki będą interpretowane w kontekście całego planu leczenia.

Poznaj opinie naszych zadowolonych klientów!

  • „Chciałabym, żebyście wiedzieli, jak bardzo jestem podekscytowana. Byliśmy na diecie od około dwóch miesięcy (mój mąż jada z nami). Czuliśmy się z nią lepiej, ale o wiele lepiej zauważyliśmy dopiero podczas ferii świątecznych, kiedy otrzymaliśmy dużą paczkę świąteczną i przez jakiś czas nie trzymaliśmy się diety. To znowu dało nam motywację, bo jaka różnica w objawach żołądkowo-jelitowych, ale też przypływ energii u nas obojga!” – Manon, 29 lat –

  • „Super pomoc!!! Byłam już na dobrej drodze, ale teraz wiem na pewno, co powinnam, a czego nie jeść i pić. Od dawna walczę z żołądkiem i jelitami, mam nadzieję, że teraz uda mi się tego pozbyć”. – Petra, 68 lat –

  • „Przeczytałem Państwa obszerny raport i porady. Bardzo dziękuję za nie, są bardzo pouczające. Przedstawione w ten sposób, z pewnością mogę kontynuować pracę. Dlatego na razie nie mam żadnych nowych pytań. Chętnie wezmę sobie Państwa sugestie do serca. I życzę powodzenia w ważnej pracy.” – Dirk, 73 lata –