HealthDay (12/21, Mozes) reports investigators looking into why “some older folks are still sharp as tacks and dementia-free well into their 80s and beyond” have now “uncovered a possible reason why: Their genes may help them fend off protein build-up in the brain.” After examining “brain images of 94 participants, all aged 80 or older,” the study team found that “Those who scored highest on memory tests – so-called ‘super agers’ – had brain protein profiles similar to those of healthy folks who were much younger.” The findings were published online in a research letter in JAMA Network Open.(SOURCE: APA Headlines)