Forty-three million deaths per year worldwide from chronic diseases that could be intercepted years before their onset. This warning appears in Nature Reviews Gastroenterology & Hepatology from three generations of scientists at the A. Gemelli IRCCS Policlinic Foundation and the Catholic University—Antonio Gasbarrini, Scientific Director of the foundation; Gianluca Ianiro, a gastroenterologist and head of the UOC CEMAD; and Giovanni Gasbarrini, emeritus professor of Internal Medicine at the Catholic University of the Sacred Heart.
The study demonstrates that the gut’s microbial ecosystem—roughly 38 trillion microorganisms—is not merely a health indicator but a diagnostic tool capable of predicting diseases decades before symptoms become clinically evident.
The Silent Fire of Metainflammation
The key mechanism uncovered by the researchers is called metainflammation: a chronic, low-grade, silent inflammatory state that standard blood tests fail to detect and that gradually erodes metabolism, the immune system, and the nervous system. By the time a patient is diagnosed with diabetes, a heart attack, or cancer, this biological blaze has likely been burning for a long time.
«The biological signatures of metainflammation could be detectable years, or even decades, before the disease manifests clinically», explains Antonio Gasbarrini, the study’s lead author. «This opens clear prospects for truly anticipatory, preventive, and personalized medicine. We don’t wait for disease: we intercept it before it arrives».
The Impact of Ultra-Processed Food and the Regulatory Void
The primary culprit behind the destruction of the gut ecosystem is an ultra-processed food-based diet. Industrial additives, emulsifiers, preservatives, and artificial sweeteners do not just affect health through calories or nutrients; they restructure the microbiome’s molecular makeup and undermine the integrity of the intestinal barrier.
One of the study’s most critical points concerns the actions of international regulators: under the lens are the EFSA and FDA, which continue to approve these substances based on safety criteria drafted before microbiome science came into the picture.
Indeed, Ianiro emphasizes, «Their impact on the microbiota and the intestinal barrier isn’t a negligible side effect. It is a primary pathogenic mechanism. We’re allowing the industrial restructuring of the human microbiota on a population scale without measuring the consequences».
Toward the Era of Ecological Medicine
The convergence of clinical research, nutrition, and environmental protection demands a paradigm shift that can’t be postponed any longer. For a holistic approach that views the body as a complex, interconnected system, the study confirms that true prevention aligns with preserving inner biological diversity.
Summarizing the scope of the discovery is Giovanni Gasbarrini, a pioneer of European gastroenterology: «What microbiome science is revealing today—that health is a property of the ecosystem, not just the organism—is the deepest conceptual revolution I’ve encountered in sixty years of clinical practice and research. It’s not a hypothesis; it’s the biological reality waiting to be measured».
A warning that calls for an immediate reform of health, food, and additive-safety policies to shift from passively waiting for illness to predicting and preventing it.
A 5-Point Roadmap for Ecological Medicine
The study goes beyond criticizing the problem and outlines a five-point action plan. To translate the science into health protection, the authors urge: introducing microbiome literacy in schools, reorienting agricultural subsidies toward fresh food production, and adopting responsible management of antibiotics and gastric protectants to safeguard the gut ecosystem. Economically and research-wise, they propose tax incentives for additives harmful to the microbiota, support for microbiome-based preventive programs, and funding dedicated to longitudinal studies focused on the microbiome–disease link.
These reforms are long overdue, as Gasbarrini puts it: «We urge that additive-safety evaluations include their impact on the microbiota and real-world mixture effects. It’s no longer acceptable to declare a food safe by examining only macronutrients while ignoring what it does to the gut ecosystem» adding that «despite a decade of solid scientific evidence, medicine and policymakers have yet to respond», and concluding that «The era of ecological medicine must begin now—not to generate new science, but to save lives».
Study
Gasbarrini, A., Ianiro, G. & Gasbarrini, G. The microbial mirror: how a disrupted microbiome forecasts disease and why policy must act. Nat Rev Gastroenterol Hepatol (2026).
Abbonati a Karla Miller
