PLOS Aging and Health emerges as a dynamic platform eager to publish boundary-breaking research spanning multiple disciplines that explore the complex processes of aging. The journal’s comprehensive scope is deliberately broad: it integrates biological, developmental, clinical, neurological, and functional perspectives to foster a holistic understanding of aging. Emphasizing multidisciplinary collaboration, it aims to delve into diverse factors influencing aging such as disease progression, cognitive decline, mental health alterations, geriatric care innovations, lifestyle interventions, technological advancements, healthcare delivery systems, social determinants, and policy frameworks. This ambitious scope targets not only the biological mechanisms but also the societal and systemic transformations necessary to promote healthy aging and enhance quality of life at both individual and population levels across diverse demographic groups.

Leading the editorial team of PLOS Aging and Health, Jennifer A. Schrack highlights the journal’s commitment to transcending traditional disciplinary boundaries, which often silo aging research into narrowly defined fields like biology, clinical practice, or policy analysis. Schrack emphasizes that the journal seeks to unify global researchers from diverse backgrounds, clinicians, social scientists, and policymakers to cultivate innovative insights and accelerate scientific breakthroughs. This multidisciplinary ethos is expected to increase the visibility and applicability of research findings by promoting integrative methodologies and cross-sector collaboration, which could ultimately accelerate translational outcomes that benefit broader populations.

Sara Hägg, co-editor-in-chief of PLOS Aging and Health, elaborates on the human-centered approach the journal will embody. She underscores the importance of elucidating both biological mechanisms and clinical relevance, fostering research that bridges fundamental biological insights with practical healthcare applications. Hägg points out that aging research remains an evolving domain attracting increasing scholarly interest, making the journal a timely and critical venue for disseminating studies grounded in open science principles. By embedding rigorous ethical standards and transparency throughout the publication process, the journal aspires to drive reproducibility and foster trust in findings critical to advancing gerontological science.

In parallel, PLOS Ecosystems addresses the very urgent and multifaceted challenges confronting global ecosystems. This journal focuses on the conservation, management, restoration, and sustainable use of terrestrial, freshwater, and marine environments. Distinctively multidisciplinary and community-driven, it invites contributions from both natural and social sciences and encourages interdisciplinary and transdisciplinary research collaborations involving policymakers, resource managers, and practitioners. The journal’s expansive scope covers ecological sustainability across various spatial and temporal scales, examining the complex interdependencies between biodiversity, ecosystem function, and human well-being, thereby positioning itself at the interface of science and society.

Henrique Miguel Pereira, Editor-in-Chief of PLOS Ecosystems, articulates the critical timeliness of launching this journal amid pervasive ecosystem transformations and alarming biodiversity losses worldwide. Pereira accentuates that preserving ecosystems is essential not only for maintaining millions of years of evolutionary heritage but also for addressing interconnected global challenges such as climate change, sustainable agriculture, forestry, fisheries, and urban resilience. By bridging fundamental ecological research with practical environmental management and policy, PLOS Ecosystems aims to foster innovative, science-grounded solutions pivotal for maintaining planetary health and human prosperity.

These journals’ emphasis on open science is central to PLOS’s overarching mission. Open access publishing ensures that vital scientific findings are freely accessible to researchers, practitioners, and the wider public globally, accelerating knowledge exchange and reducing inequality in access to scientific information. By leveraging the Flat Fee publishing model, PLOS innovatively supports institutional subscription schemes that promote broad and equitable participation in the scientific discourse, removing individual monetary barriers that traditionally limit publication opportunities for many researchers.

Lauren Coligan, Publisher at PLOS, underscores the transformative potential of these journals to influence scholarly communication practices within their respective research communities. By extending their portfolio with PLOS Aging and Health and PLOS Ecosystems, PLOS is strategically positioning itself to shape open science norms in fields that are both societally vital and rapidly developing. Rapid access to high-quality, interdisciplinary research published under transparent, ethical frameworks can directly inform policy-making, clinical interventions, ecological restoration efforts, and public health strategies.

The introduction of PLOS Aging and Health and PLOS Ecosystems represents a forward leap in aligning scientific inquiry with urgent real-world challenges. Both journals underscore the necessity of transcending traditional disciplinary silos to foster collaborative, integrative knowledge production. They emphasize the importance of embedding research within open access and open data frameworks to ensure that findings can be systematically validated, reproduced, and extended by others. This approach not only bolsters scientific credibility but also maximizes societal benefit by ensuring wider and faster dissemination of transformative discoveries.

The commitment to addressing aging from a diverse, multidimensional perspective within PLOS Aging and Health reflects growing recognition that aging is not merely a biological inevitability but a complex interplay of physiological, cognitive, social, and environmental factors. Recognizing the policy implications and healthcare system adaptations needed to support healthy aging, this journal promises to provide scientific evidence essential for shaping innovations in prevention, care delivery, and social support systems responsive to shifting demographic realities worldwide.

Similarly, PLOS Ecosystems positions itself as an essential nexus for fostering dialogue among ecologists, social scientists, policymakers, and practitioners navigating the unprecedented environmental crises of our age. By integrating knowledge across disciplines and stakeholder groups, the journal promotes research that not only understands ecosystems in depth but also translates scientific insights into actionable strategies to conserve biodiversity, restore habitat functionality, and mitigate anthropogenic pressures.

Together, these new PLOS journals stand as paragons of the evolving landscape of scholarly publishing, where open access, rigorous peer review, and cross-disciplinary collaboration converge to catalyze innovation and societal impact. They represent a visionary step towards ensuring that scientific progress in aging research and ecosystem science is accessible, actionable, and aligned with the pressing needs of a rapidly changing world.

Subject of Research: Not applicable

Web References:

• PLOS Aging and Health
• PLOS Ecosystems
• PLOS Flat Fee Model
• Public Library of Science (PLOS)

Keywords: Scientific publishing, Medical journals, Scientific journals, Science communication, Academic journals, Open access, Publishing industry, Digital publishing

The longstanding approach to medical evaluation emphasizes the diagnosis and treatment of discrete diseases, a methodology which, while effective in many respects, often overlooks the intricate interplay between comorbidities and their cumulative impact on overall health. Dr. Shabnam Salimi, a physician-scientist and the study’s lead author, argues that this siloed perspective hinders comprehensive understanding of aging as a multidimensional biological phenomenon. The Health Octo Tool, she explains, represents a paradigm shift by encapsulating physiological decline through an “aging-based framework” that integrates systemic organ function and cumulative damage rather than isolated pathologies.

At the heart of the tool lies the concept of “health entropy,” a measurable index that captures the degree of molecular and cellular deterioration accrued over time within the body. This concept derives from thermodynamic principles, where entropy signifies disorder, thereby analogizing the biological decline seen in aging tissues and organ systems. By quantifying health entropy, researchers equate it to an individual’s overall physical resilience and rate of biological aging, providing a biomarker more predictive of functional outcomes than chronological age or singular disease markers.

The research team utilized the extensive dataset from the Baltimore Longitudinal Study on Aging (BLSA), which tracks adults’ health trajectories over decades. From these data, they instituted a metric called the Body Organ Disease Number (BODN), which indexes the extent of organ system involvement across fourteen domains including cardiovascular, respiratory, neurological, and oncological statuses. This multidimensional score operationalizes disease burden in a manner that appreciates not just presence but distribution of dysfunction across organ systems.

Extending the analytical framework, the investigators introduced the Bodily System-Specific Age, which estimates the biological age of individual organ systems based on their unique functional decline patterns. Complementing this, the Bodily-Specific Clock quantifies intrinsic biological aging within each organ system. These refined metrics illuminate an essential finding: organ systems do not age synchronously. Rather, differential aging rates exist within a single individual, highlighting the heterogeneity that traditional models often obscure.

Building on these system-specific insights, the researchers synthesized composite measures— the Body Clock and Body Age—that reflect the aggregate intrinsic aging across the entire organism. Distinct from chronological age, these metrics embody the rate and extent of physiological decline, enabling a more nuanced assessment of an individual’s health trajectory. This comprehensive approach transcends the constraints of disease-centric evaluation, positing aging itself as a quantifiable and targetable biological process.

Recognizing functional decline as a critical element of aging, the study further innovates through the creation of Speed-Body Clock and Speed-Body Age indices. These associate biological aging rates with mobility decline, operationalized through walking speed — a well-established predictor of morbidity and mortality in older adults. Similarly, Disability-Body Clock and Disability Body Age metrics correlate intrinsic aging with cognitive and physical disability risk, thus bridging the gap between biological age and clinical outcomes.

Perhaps most strikingly, the Health Octo Tool reveals the outsized influence of ostensibly minor conditions on long-term aging trajectories. Early-life untreated hypertension, traditionally regarded as a manageable risk factor, emerged as a potent driver of accelerated biological aging. This observation underscores the potential for early intervention to modulate aging pathways and improve lifespan and healthspan, aligning with emerging geroscience goals.

The research team is actively developing a digital platform to operationalize these findings, aiming to provide clinicians and their patients with a user-friendly interface to calculate body and organ-specific ages. The application will allow users to monitor aging metrics longitudinally and evaluate the efficacy of lifestyle adjustments or pharmacological interventions in real time. Such technological integration holds promise for personalized medicine strategies that dynamically respond to an individual’s biological aging profile.

Senior authors Daniel Raftery, professor of anesthesiology and pain medicine at UW, and Luigi Ferrucci, scientific director at the National Institute on Aging, emphasize the transformative potential of this tool. By enabling quantitative tracking of aging processes, the Health Octo Tool may catalyze shifts in clinical practice, research, and public health policy, ultimately fostering interventions that prolong vigor and reduce age-associated disability.

The study was supported by a grant from the National Institutes of Health’s National Institute on Aging, underscoring the importance of federal funding in advancing translational geroscience. Moreover, the Health Octo Tool is currently under provisional patent by Dr. Salimi, with plans to disseminate it digitally to the broader research community, heralding a new era of accessible and data-driven aging assessments.

This work challenges prevailing medical dogmas by modeling aging as a complex, system-wide phenomenon rather than a linear consequence of individual diseases. Its multifaceted metrics offer clinicians and researchers a powerful toolkit to interrogate biological aging, elucidate mechanisms of resilience and decline, and tailor interventions aimed at extending healthy longevity.

As the global population ages, such innovative approaches are critical to addressing the burgeoning burden of chronic disease and disability. By quantifying aging in a clinically meaningful way, the Health Octo Tool lays the groundwork for precision geriatrics that is anticipatory, personalized, and potentially transformative for human healthspan.

Subject of Research: People

Article Title: Health octo tool matches personalized health with rate of aging

News Publication Date: 5-May-2025

Web References:

• Nature Communications paper: https://www.nature.com/articles/s41467-025-58819-x
• Baltimore Longitudinal Study on Aging: https://www.nia.nih.gov/research/labs/blsa
• UW Medicine Healthy Aging & Longevity Research Institute: https://halo.dlmp.uw.edu/

References:
Raftery D, Salimi S, Ferrucci L, et al. Health octo tool matches personalized health with rate of aging. Nature Communications. 2025; https://doi.org/10.1038/s41467-025-58819-x

Image Credits: Danijel Djukovic/Raftery Lab UW Medicine

Keywords: Human health, Older adults, Geriatrics

At the heart of the Health Octo tool lies a multidimensional assessment framework that captures a person’s health status across eight critical physiological and biochemical domains—hence the name "Octo." These dimensions encompass cardiovascular function, metabolic health, immune resilience, cognitive performance, physical fitness, inflammatory markers, genomic stability, and cellular senescence indicators. Unlike conventional health assessments that often focus on isolated biomarkers or symptoms, the Octo model synthesizes these domains into a composite profile that reflects an individual’s biological age relative to their chronological age. This holistic approach is revolutionary, providing a more accurate depiction of the aging trajectory at a personalized scale.

The technical sophistication of the Health Octo tool is deeply rooted in advanced statistical modeling and machine learning algorithms. By processing longitudinal health data, the system can detect subtle patterns and rate changes in physiological function over time. Importantly, the model utilizes Bayesian inference frameworks to robustly estimate uncertainties and personal variabilities in aging rates. This method allows for dynamically updating an individual’s aging profile as more data becomes available, ensuring that the predictive accuracy improves with ongoing monitoring. The capacity for iterative refinement means the Health Octo is not a static measure but a living, evolving portrait of one’s biological aging landscape.

One of the most exciting features of the Health Octo tool is its ability to reconcile personalized health assessments with interventions aimed at altering the rate of aging. By identifying which of the eight physiological dimensions most strongly deviate from normative aging patterns, clinicians can prioritize targeted therapeutic actions. For instance, if a patient’s immune resilience shows accelerated decline, bespoke immunomodulatory regimens can be implemented to mitigate this risk. Conversely, individuals whose metabolic health appears well-preserved but exhibit early signs of genomic instability might benefit from interventions focusing on DNA repair and epigenomic stabilization. This targeted precision medicine approach could drastically improve lifespan quality and reduce the burden of age-associated morbidity.

The origins of this tool trace back to an extensive dataset comprising thousands of longitudinal health records from diverse populations. Drawing from wide-ranging epidemiological studies and clinical trials, the Health Octo model incorporates genetic, epigenetic, proteomic, and physiological variables, systematically harmonizing siloed data sources. Through this comprehensive integration, the researchers crafted a robust aging rate estimator that is sensitive not only to pathological aging trajectories but also to lifestyle-induced variability. The impact of diet, exercise, stress, and environmental exposures can all be factored into the model’s aging score calculations, underscoring the tool’s adaptability to real-world health complexities.

Crucially, the scientific team behind Health Octo validated their model across multiple independent cohorts, encompassing varying ethnicities, socio-economic statuses, and geographic regions. This rigorous validation process revealed that the tool consistently outperformed existing biological age metrics such as epigenetic clocks or frailty indices. In head-to-head comparisons, the Octo score demonstrated superior predictive power for clinically relevant outcomes including mortality risk, incidence of cardiovascular events, and cognitive decline trajectories. Such predictive robustness paves the way for broad clinical adoption and potentially transforms public health screening protocols aimed at early identification of accelerated aging.

Underpinning the Health Octo framework is an array of quantitative biomarkers that themselves reflect cutting-edge advances in aging research. Notably, the integration of next-generation sequencing data enables the tool to incorporate measures of somatic mutation burden and telomere attrition within its genomic dimension. Coupled with novel blood-based inflammatory markers and high-resolution imaging-derived vascular assessments, these components collectively provide a multi-scale snapshot of aging mechanisms at work. Through mathematically encoding these diverse inputs, the model employs dimensionality reduction techniques and hierarchical clustering to reveal latent aging patterns that are invisible to traditional clinical evaluation.

Beyond predictive diagnostics, the Health Octo tool serves as a dynamic monitoring platform to evaluate anti-aging interventions in near real-time. Whether tracking responses to pharmaceuticals, nutraceuticals, or lifestyle modifications, the model’s iterative updates allow researchers and clinicians to quantify efficacy in slowing or reversing age-related decline across specific physiological domains. This capability could revolutionize clinical trial designs by providing sensitive endpoints that detect subtle biological changes earlier than overt clinical manifestations, optimizing resource allocation and accelerating the development of novel geroprotective treatments.

From a public health perspective, the implications of the Health Octo tool are profound. By enabling a granular understanding of individual aging rates, it provides a scientific foundation for proactive health management strategies tailored to prevent chronic diseases before their onset. As populations worldwide grapple with demographic shifts towards older age structures, tools like Health Octo could shift healthcare paradigms from reactive disease management to anticipatory, personalized aging intervention. Such approaches promise not only prolonged lifespan but also extended healthspan—the period of life free from debilitating illness.

The architects of the Health Octo tool emphasize ethical considerations inherent in biometric aging assessment. They advocate transparency around data privacy, equitable access to the technology, and avoiding deterministic interpretations that could stigmatize individuals with accelerated aging profiles. In this vein, the model is intended to empower patients by illuminating actionable health insights rather than serve as a fatalistic prognostic. Moreover, the adaptable design accommodates evolving scientific discoveries and user feedback, ensuring the tool remains responsive to societal needs and technological advancements.

Looking ahead, future iterations of Health Octo aim to integrate wearable sensor data and real-time physiological monitoring, further refining the temporal resolution of aging rate assessments. The addition of ecological momentary assessments—capturing fluctuations in mood, stress, and environmental exposures—could enrich the model’s contextual understanding of aging dynamics. Additionally, researchers are exploring the potential synergy between health octo scores and emerging molecular therapies targeting senescent cell clearance, epigenetic reprogramming, and metabolic rejuvenation. This convergence of systems biology, bioinformatics, and therapeutic innovation heralds a new era in combating age-related decline.

The development trajectory of the Health Octo tool underscores a broader vision within biomedical science: transcending the limitations of chronological age as a crude metric, and instead embracing personalized, mechanistically informed aging measures. The ability to quantify aging as a modifiable phenotype opens uncharted avenues for research, clinical care, and societal health policy. As scientific understanding deepens, the integration of multi-omic data streams and artificial intelligence will likely yield even more precise and actionable insights, continuing the evolution inaugurated by the Health Octo framework.

In summary, the Health Octo tool represents a monumental stride towards reconciling personalized health management with the complex, multifactorial nature of human aging. Its multidimensional, computationally robust architecture enables unprecedented precision in estimating individual aging rates and guiding tailored interventions. This innovation has the potential not only to extend healthy lifespan on a global scale but also to redefine how medicine conceptualizes the aging process itself. As the field advances, the Health Octo stands as a beacon of hope for a future where aging is not merely endured but proactively managed and ameliorated.

Subject of Research: Personalized health assessment and biological aging rate quantification

Article Title: Health Octo Tool Matches Personalized Health with Rate of Aging

Article References:

Salimi, S., Vehtari, A., Salive, M. et al. Health octo tool matches personalized health with rate of aging.
Nat Commun 16, 4007 (2025). https://doi.org/10.1038/s41467-025-58819-x

Image Credits: AI Generated