Location Impacts Biological Aging Rates

Geneticist Michael Snyder of Stanford University and his team studied 322 people worldwide to explore how location affects aging. Researchers recruited participants primarily from scientific conferences in Europe, East Asia, and South Asia, focusing on individuals with shared ancestry living in different regions. They examined DNA, proteins, gut bacteria, and other biomarkers to build a comprehensive biological profile for each person.

The study revealed that ancestry strongly influences baseline genetics, gut microbiome composition, and metabolism, even after relocation. However, geographic location also shifts these factors. East Asians living outside of East Asia showed accelerated biological aging, while Europeans in North America appeared younger than their counterparts in Europe.

Researchers suggest diet, pollution, healthcare, stress, and microbiome changes likely contribute to these differences, with sphingolipid levels potentially linking gut bacteria to telomere maintenance and age-related diseases. The findings emphasize the need for personalized medicine that accounts for both genetics and environment, as universal health advice may not be effective. The work continues to understand these complex interactions.