Longevity & AgingPlasma Proteins Reveal Three Metabolic Aging Surge Points at Ages 44, 51, and 63
Researchers used UK Biobank data to build a Metabolic Age (MA) score from 18 NMR metabolomic markers, then mapped 2,923 plasma proteins against six aging phenotypes including cardiovascular disease, type 2 diabetes, mortality, frailty, and telomere length. Sixty proteins were associated with all six phenotypes, with GDF15 and PLAUR emerging as the most consistent biomarkers. A novel sliding-window analysis revealed that protein expression does not change smoothly with metabolic age but instead surges in three distinct waves at metabolic ages 44, 51, and 63 years. These peaks were linked to inflammatory, cytokine, and immune-defense pathways, suggesting discrete biological transition points during human metabolic aging that could serve as precision intervention windows.
