Epigenetic Clocks and Biological Age Tests: Current Limitations and Implications
Epigenetic clocks, which estimate biological age based on DNA, are gaining popularity as tools for understanding aging. These clocks measure chemical changes to DNA, known as epigenetic marks, to provide insights into how a person's body is aging. Despite their potential, these clocks are not yet reliable for individual health decisions. The variability in results, influenced by factors such as lifestyle and environmental exposures, makes them unsuitable for personal health guidance. Currently, there are no FDA-approved direct-to-consumer biological age tests, and the science behind these tests is still evolving.