The human body does not age at a constant rate throughout adulthood — instead, it accelerates dramatically around ages 44 and 60, a new study finds.
The new research, published Aug. 14 in the journal Nature Aging,involved measuring more than 11,000 molecules in the adult body over time, and it revealed that 81% of them undergo dramatic changes at these two ages.
This type of aging research focuses on tracking “biological age,” which refers to changes that occur in the body over a lifetime, affecting proteins, metabolites and gene activity. This concept is distinct from the “chronological age” that people celebrate each year on their birthdays.
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