Hair-based DNA methylation age estimation model

Hair-based DNA methylation age estimation model predicts chronological age in U. arctos (mean absolute error of 3.2 years, median absolute error of 2.2 years).

“The best age estimation model used three cytosine-phosphate-guanine sites adjacent to two genes, VGF and KCNK12, with a mean absolute error of 3.2 years”

Animalshair root

Less-invasive age estimation using hair based on DNA methylation in brown bears

Scientific reports·29 Dec 2025