Aging Out Of The Blue: Region-Specific Epigenetic Clock Calibration For A Blue Zone With The Dnam Superlearner
Ever wondered why some communities seem to live longer, healthier lives? These special places, often called “blue zones,” are hotbeds for studying longevity. Scientists use “epigenetic clocks” to estimate a person’s biological age, which can be different from their actual chronological age. These clocks look at patterns of chemical tags on our DNA, called DNA methylation, which change as we get older.
However, traditional epigenetic clocks are usually built using data from diverse populations, which might not accurately capture the unique aging patterns in a specific long-lived region. To address this, a new study introduced an innovative approach using a “SuperLearner” – a smart computer program that combines the strengths of multiple prediction methods.
This new method was trained on data from a comparison group within Costa Rica, allowing it to be specifically tailored to the local population. When applied to the Nicoya blue zone residents, the findings were compelling: individuals in this blue zone showed a biological age that was, on average, about two years younger than their actual age. This suggests that their lifestyle and environment contribute to a slower rate of biological aging. This advanced technique offers a more precise way to understand the secrets of longevity in these remarkable communities.
Source: link to paper