Most chronic diseases don’t begin with obvious symptoms or dramatic warning signs. Instead, they develop quietly over many years, as small changes accumulate in the body. A new perspective from researchers at the Buck Institute for Research on Aging notes that modern medicine often waits until disease is well underway and argues that new technologies could help detect risk much earlier, when prevention may be most effective.

The perspective, aptly titled “We Wait for Disease to Shout. What if We Listened When Biology Whispered?” introduces the concept of the “long tail” of biology. Rather than being caused by a single factor, most diseases and aging-related conditions develop from the combined impact of many small influences, including genetics, lifestyle, environmental exposures, sleep patterns, stress, and changes in the gut microbiome. Over time, these subtle shifts can gradually weaken the body’s resilience and increase the risk of chronic disease.

“By the time many diseases are diagnosed, the body has often been drifting off course for years,” said Nathan Price, PhD, Buck Institute professor, co-director of the Buck’s Center for Human Healthspan and senior author of the paper. “We now have the opportunity to detect those early changes by tracking what’s normal for each individual and noticing when biology starts to move in the wrong direction.”

The researchers highlight how diseases such as type 2 diabetes, heart disease, and neurodegenerative disorders often begin developing long before symptoms appear. For example, in type 2 diabetes, biological changes related to inflammation, metabolism, and insulin function can occur 10 to 15 years before blood sugar levels rise enough to trigger a diagnosis. The authors argue that catching these early warning signals could open the door to interventions that help delay or even prevent disease.

To make this possible, the perspective proposes a new personalized framework that treats each individual as their own biological reference point. By tracking changes over time, rather than comparing someone to population averages, researchers believe it may be possible to identify subtle shifts that signal increased risk.

Advances in health technology are making this approach increasingly realistic. Wearable devices can now continuously track heart rate, sleep, activity, and other physiological signals, while modern laboratory techniques allow scientists to measure thousands of biological markers from simple samples such as blood, saliva, urine, or even breath. Combined with artificial intelligence tools that can analyze complex patterns, these technologies could help translate large amounts of data into meaningful, personalized insights.

“Medicine has traditionally focused on treating disease after symptoms appear,” said Noa Rappaport PhD, lead author of the paper and an associate research professor at the Buck Institute. “Our goal is to shift toward protecting health by identifying risk earlier and understanding how each person’s biology changes over time.”

The authors also emphasize that major challenges remain. “Advanced biological testing can still be expensive, and healthcare systems are largely designed to treat illness rather than monitor long-term health,” said Lee Hood, MD, PhD, distinguished professor and co-director of the Buck’s Center for Healthspan. “Ensuring broad access to preventive technologies will be critical to preventing new health disparities. In addition, regulatory systems will need to adapt to evaluate new approaches that rely on personalized data and AI-driven analysis.”

Despite these challenges, the researchers say the tools needed to transform prevention are rapidly emerging. By combining wearable sensors, advanced biological measurements, and artificial intelligence, they envision a future in which healthcare focuses not just on treating disease, but on preserving health throughout life.

Citation: We Wait for Disease to Shout. What if We Listened When Biology Whispered?

DOI: 10.1016/j.cels.2025.101509  

Additional Buck Institute coauthor: Annalise Schweickart also contributed to the work.

COI: Nathan Price is chief scientific officer at Thorne and has a profit interest in the company. He also serves as an advisor to the Institute for Healthier Living, Abu Dhabi, and various companies where he has equity, including Vitaliti, Rue Four, ProPetDx, and Sera Prognostics.

Acknowledgements: This work was funded by an award from the Proactive Health Office of the Advanced Research Projects Agency for Health (ARPA-H) to the Personalized Analytics for Transforming Health (PATH) Project, the NIH NIA T32 AG000266 grant for Training in Basic Research on Aging and Age-Related Disease, and National Institutes of Health (NIH) grant no. U19AG023122 528

About the Buck Institute for Research on Aging

At the Buck, we aim to end the threat of age-related diseases for this and future generations. We bring together the most capable and passionate scientists from a broad range of disciplines to study mechanisms of aging and to identify therapeutics that slow down aging. Our goal is to increase human health span, or the healthy years of life. Located just north of San Francisco, we are globally recognized as the pioneer and leader in efforts to target aging, the number one risk factor for serious diseases including Alzheimer’s, Parkinson’s, cancer, macular degeneration, heart disease, and diabetes. The Buck wants to help people live better longer. Our success will ultimately change healthcare. Learn more at: 

Journal

Cell Systems

Funder

ARPA-H,
NIH/National Institute on Aging,
NIH/National Institutes of Health

DOI

10.1016/j.cels.2025.101509

The GMoC not only replicates the complex environment of the human gut but also offers a scalable and reproducible means to examine the microbial community within. By utilizing this technology, scientists are better equipped to assess the impact of various gut microorganisms on overall health, thus fundamentally transforming the field of gut microbiome research. Professor Lim Chwee Teck, leading the research team, stated, “The GMoC system signifies a paradigm shift in our quest to decode the gut microbiome’s role in health and disease.” This model enables detailed exploration of the physiological roles of diverse microbial communities, propelling advancements in preventive healthcare and pharmaceuticals.

Historically, the relationship between gut microbiota and human health has been difficult to decipher, largely due to the complex interplay among trillions of microbes residing in the intestines. With microorganisms capable of affecting everything from digestion to immune response, their specific mechanisms often remain elusive. The GMoC effectively mimics these biological interactions, providing a more accurate representation of real-world conditions compared to previous static models.

The 3D design is particularly advantageous as it introduces vital elements such as oxygen gradients and food movement simulation, which are essential for microbial growth and function that are ideally present within a living gastrointestinal tract. This simulated environment allows researchers to cultivate microbial communities more accurately, facilitating better understanding of the nuances of microbial interactions and their potential impacts on gut health.

A defining characteristic of the GMoC is its integration of structural features representative of the human gut. The model includes 3D versions of intestinal villi, which are critical for nutrient absorption. By replicating these tiny, finger-like projections, scientists can explore how microbial positioning affects their functionality. Such insights are crucial, especially considering that the precise localization of microbes can influence their metabolic activities and interactions, shedding light on their contributions to health or disease.

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The platform’s ability to facilitate real-time observations of microbial interactions stands out as one of its most significant advantages. Researchers anticipate that the GMoC will be instrumental in unraveling the competitive dynamics occurring among gut bacteria. The competition for nutrients and space is a critical aspect of maintaining gut health and preventing pathogenic bacteria from establishing dominance, which can lead to various gastrointestinal disorders.

In addition to its immediate research implications, the GMoC opens avenues for future exploration in areas such as antibiotic effects on microbiomes and the impact of dietary changes on gut health. By understanding how different environmental stimuli affect microbial communities, researchers can develop targeted interventions aimed at modulating gut microbiota to foster better health outcomes.

The vision for the GMoC extends to incorporating even more complexities, with plans to include mechanical cues that mirror real-life gut conditions, alongside enhancing the cellular diversity within the model. This continuous refinement holds promise for creating a truly unparalleled platform for microbiome research.

Bringing such a device to fruition also necessitates strides towards commercial viability, as the research team strives to reduce production costs and standardize manufacturing processes. The ultimate goal is to deploy the GMoC widely, allowing not only advanced academic studies but also practical applications in healthcare settings.

The research is not just an isolated achievement; it catalyzes a broader awakening within the scientific community about the vital role of gut microorganisms in human health. By creating a more relevant and dynamic model, the GMoC is on track to contribute significantly towards uncovering new therapeutic approaches that harness the microbiome’s power for disease prevention and treatment.

With this innovative tool now available, the collective quest for understanding the microbiome can gain momentum. The potential to decipher the intricate relationships governing gut microbiota represents a promising frontier in biomedical and health-related research. The GMoC is set to become an invaluable resource, enabling researchers to illuminate our understanding of health, disease, and the fundamental role of gut microbes.

As the field moves forward, cross-disciplinary collaboration involving microbiologists, pharmacologists, and biomedical engineers will be crucial to fully realize the GMoC’s potential. Encouraging scholarly discourse among these domains will enhance the development of microbiome-centric therapies and interventions, impacting public health on a global scale.

This pioneering advancement heralds a new era for gut health research, where the intricate dance between human physiology and microbial inhabitants can be studied in unprecedented detail. As researchers harness the GMoC to untangle this complexity, they stand poised to unlock solutions that could redefine how we approach health and disease management in the 21st century.

In conclusion, the GMoC exemplifies how cutting-edge technology combined with innovative research methodologies can transform our understanding of health’s most enigmatic aspects. This device holds the promise of not just elucidating the gut microbiome’s role but proactively shaping a healthier future through informed, targeted interventions against gut-associated ailments.

Subject of Research: Cells
Article Title: Dissecting Gut-Microbial Community Interactions using a Gut Microbiome-on-a-Chip
News Publication Date: 27-Feb-2024
Web References: DOI Link
References: Advanced Science
Image Credits: National University of Singapore

Keywords: Microbiology, Gastrointestinal disorders, Gut microbiota, 3D modeling, Drug research, Mechanical systems, Nutritional physiology, Disease prevention.