Salivary microbiome profiles

Salivary microbiome profiles predict chronological age in humans (Test-set mean absolute error 7.49 years; R2 = 0.31).

“An XGBoost regression model yielded a test-set mean absolute error of 7.49 years (R2 = 0.31) for chronological age.”

HumansKorean adults; test-set prediction using XGBoost regressionsaliva

Age-associated variation in the Korean salivary microbiome: Exploratory assessment of spousal cohabitation as a potential confounder for forensic inference

Legal medicine (Tokyo, Japan)·13 Oct 2026