Many tests take a single proxy for biological age (Inflammation age, DNA methylation etc.) However, these tests were not designed to give insight into an individuals personal longevity, but for research purposes, predominantly in animal models.

Imagine a scenario where an individual in their 60’s receives an age score in their 20’s. The data is not actionable nor does it provide insight on how to improve your healthy lifespan.

Epigenetic clocks can’t actually tell you much about your own health. That’s because they were designed to assess large groups of people, not individuals. Consequently, their results can be unreliable. (NY Times 2024.)

To tackle this problem Zest has created the only multifaceted age testing system, from the ground up, Functional Age.  We benchmark the biomarkers linked to aging and pull data from your blood, wearable device, and functional performance tests. Then provide analysis that is actionable and relevant to the individual taking the test, not the mouse or yeast trial that other common tests were developed for.

If you have excellent blood biomarkers, but warning signs present in your cognitive performance, Zest will detect it, rather than telling you that you are fit to live to 120. Giving you the necessary information to optimize this area and create a truly personalized action plan for your aging journey.