Image Credit: Courtesy of University of Manchester
Scientific Frontline: Extended "At a Glance" Summary: Geography and Biological Aging Multiomics Study
The Core Concept: A groundbreaking multiomics study revealing that biological aging and overall human biology are shaped by an intricate interaction between a person's genetic ancestry and their geographic environment.
Key Distinction/Mechanism: By analyzing individuals with identical genetic ancestry living on different continents, researchers separated the effects of inherited DNA from environmental influences. They discovered that while ancestry deeply marks the immune system and gut bacteria, geography uniquely rewires molecular networks, shifts metabolic pathways, and significantly alters biological age.
Major Frameworks/Components:
- Multiomics Profiling: The simultaneous measurement of genes, proteins, gut microbes, metabolic chemicals, and biological metals.
- Geographic Molecular Rewiring: Environmental shifts were shown to directly alter cholesterol levels, inflammatory markers, and energy processing.
- Divergent Biological Aging: Geographic relocation impacts cellular aging distinctly across demographics; East Asians living outside Asia exhibited accelerated biological aging, whereas Europeans living outside Europe appeared biologically younger.
- Telomerase-Microbiome Axis: The discovery of a novel three-way molecular chain reaction connecting a cellular aging gene (telomerase), a specific gut microbe, and a lipid molecule known as sphingomyelin.
Branch of Science: Genomics, Molecular Biology, Bioinformatics, and Epidemiology.
Future Application: The resulting open-access dataset will enable clinicians and researchers to develop highly accurate diagnostics, treatments, and prevention strategies tailored specifically to an individual's unique combination of genetic ancestry and environmental context.
Why It Matters: These findings dismantle the one-size-fits-all healthcare model, demonstrating that true precision medicine must account for global diversity and the profound ways physical location accelerates or slows the biological clock.
Scientists at the University of Manchester, part of a global team led by Stanford University, have uncovered a remarkable link between where individuals live and how quickly their bodies age.
Publishing in the leading scientific journal Cell, the researchers analyzed 322 healthy individuals from Europe, East Asia, and South Asia to build the most detailed picture yet of how genetic ancestry and environment shape human biology.
They utilized a sweeping "multiomics" approach, measuring everything from genes and proteins to gut bacteria, metabolic chemicals, and metals, to understand how ethnicity and geography shape human biology.
By recruiting individuals of the same genetic ancestry living on different continents, the scientists were able to separate the effects of DNA from the influence of the environment with unprecedented clarity.
Genetic ancestry refers to the estimation of ancestral geographic origins based on DNA patterns inherited across generations.
The researchers found that ethnic background leaves a profound mark on the immune system, metabolism, and gut bacteria, regardless of geographical relocation.
South Asian volunteers demonstrated signs of higher pathogen exposure across multiple biological layers.
European participants exhibited richer gut microbial diversity and higher levels of chemicals associated with heart disease risk.
However, geography also rewired key molecular networks involved in cholesterol, inflammation, and energy processing.
Moving between continents was sufficient to shift major metabolic pathways and alter the balance of gut microbes.
The most dramatic finding was that geography appears to alter biological age—the molecular measure of how old cells appear.
East Asians living outside of Asia were biologically older than those residing within Asia.
Europeans demonstrated the opposite pattern, appearing biologically younger when living outside of Europe.
The researchers stated that this suggests the environment and genetic ancestry interact in surprising ways that could accelerate or decelerate aging.
The study also uncovered a previously unobserved link between a telomerase gene involved in cellular aging and a specific gut microbe, connected through a lipid molecule called sphingomyelin.
This unexpected three-way link indicates a molecular chain reaction through which gut bacteria may influence the rate of cellular aging.
These findings create a powerful new resource for precision medicine, highlighting the need for healthcare tailored to genetic ancestry and environment, rather than a one-size-fits-all model.
The researchers noted that their open-access dataset will help scientists and clinicians develop more accurate diagnostics, treatments, and prevention strategies tailored to genetic ancestry, environment, and individual biology.
"What this study shows, more clearly than ever before, is that our biology is shaped by a combination of both our genetic ancestry and the places we live," said coauthor Professor Richard Unwin of the University of Manchester.
The University of Manchester conducted the analysis of biological metals alongside international groups investigating proteins, the immune system, metabolism, and microbiomes to generate a massive, integrated picture of human variability.
Unwin added, "We were struck by how consistently ethnicity influenced immunity, metabolism, and the microbiome, even when people moved thousands of miles away.
"However, it is equally clear that where we live can have substantial impacts on nudging key molecular pathways—even how our cells appear to age—in different directions depending on who you are. It proves that precision medicine must reflect real global diversity, not a single population."
Michael Snyder, professor of genetics at the Stanford School of Medicine and lead author of the study, said, "Our study is special because for the first time we have deeply profiled people from around the world, including Asia, Europe, and North America. This enables us to see what properties, such as metabolites and microbes, are associated with ethnicity and which ones with geography.
"One interesting finding is the association of age with geography. East Asians that live outside of Asia have a higher biological age than those residing in Asia. For Europeans, those residing outside of Europe are younger."
Published in journal: Cell
Title: A comparison of deep multiomics profiles across ethnicity, geography, and age
Authors: Nasim Barapour, John Z. Cao, Yue Wu, Shubham Gupta, Michael R. Hoopmann, Rui Qin, Mukul K. Midha, Myriam Mireault, Pablo Juanes-Velasco, Casey Hanson, Sara Ahadi, Emily Higgs, David H. Baxter, Christian Diener, Orit Dagan-Rosenfeld, Daniel Hornburg, Songjie Che, Fredrik Edfors, Stephanie J. Church, Mohan Babu, Durga Thota, Christopher Jin, Tristan Chou, Shannon Rego, Monika Avina, Lettie McGuire, Jessi W. Li, Thomas Karathanos, Daniel J. Panyard, Martín A. Acosta Parra, Aubrey K. Roberts, Amarnath K. Ranjit, Ekanath Rangan, Jose Juan Almagro Armenteros, Melanie Ashland, Kevin Erazo Castillo, Gavin Traber, Matthew Ellenberger, Ryan Kellogg, Wenyu Zhou, Hannes Rost, Martin Kjellberg, Tejaswini Mishra, Charu Kapil, Ulrike Kusebauch, Sushmita Patwardhan, Alicia Landeira-Viñuela, Angela-Patricia Hernandez, Mikkel Eggert Thomsen, Maliha Mashkoor, Thanadol Sutantiwanichkul, Tea Dodig-Crnkovic, Annika Bendes, Leo Dahl, Sean M. Gibbons, P. Venkat Rangan, Allan Stensballe, Jochen M. Schwenk, Richard D. Unwin, Manuel Fuentes, Lekha Sleno, Robert L. Moritz, Lara K. Mahal, and Michael P. Snyder
Source/Credit: University of Manchester
Reference Number: geno051526_01
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