Biological Age Testing Guide 2026: Epigenetic Clocks, Glycan Tests, and What Your Score Actually Means
Your chronological age is fixed. Your biological age — the rate at which your cells, tissues, and systems are actually aging — is increasingly measurable and, according to a growing body of research, modifiable. Biological age testing has moved from academic research tools to direct-to-consumer kits in the last several years. This guide covers what the different methodologies measure, how to interpret your score, and what interventions the research actually supports.
Reading time
8 min read
Published
Apr 30, 2026
Updated
Apr 30, 2026