https://med.stanford.edu/news/all-news/2024/08/massive-biomolecular-shifts-occur-in-our-40s-and-60s--stanford-m.html
Rather, we undergo two periods of rapid change during our life span, averaging around age 44 and age 60. A paper describing these findings was published in the journal Nature Aging Aug. 14.
"We're not just changing gradually over time; there are some really dramatic changes," said Michael Snyder, PhD, professor of genetics and the study's senior author. "It turns out the mid-40s is a time of dramatic change, as is the early 60s. And that's true no matter what class of molecules you look at."