Systematic profiling reveals betaine as an exercise mimetic for geroprotection

Cell. 2025 Jun 25:S0092-8674(25)00635-X. doi: 10.1016/j.cell.2025.06.001. Online ahead of print.

Abstract

Exercise has well-established health benefits, yet its molecular underpinnings remain incompletely understood. We conducted an integrated multi-omics analysis to compare the effects of acute vs. long-term exercise in healthy males. Acute exercise induced transient responses, whereas repeated exercise triggered adaptive changes, notably reducing cellular senescence and inflammation and enhancing betaine metabolism. Exercise-driven betaine enrichment, partly mediated by renal biosynthesis, exerts geroprotective effects and rescues age-related health decline in mice. Betaine binds to and inhibits TANK-binding kinase 1 (TBK1), retarding the kinetics of aging. These findings systematically elucidate the molecular benefits of exercise and position betaine as an exercise mimetic for healthy aging.

Keywords: ETS1; TBK1; aging; betaine; exercise; exercise immunology; exercise metabolism; inflammation; kidney; senescence.