Have you ever had an argument because you disagree about the way something happened? You were both there, you saw the same thing, but you remember it differently.
Aging gracefully—and slowly—sounds nice. But new research reveals that brain cells experience a sudden and serious increase in aging in midlife. And scientists might know why: a gene called interleukin-33 (IL33), already suspected as crucial to the aging process, might be key. The study, which is in mice, raises speculations about reversing the effects of aging, even temporarily, by targeting that underlying gene.