Apo ɛ4 Gene Tied To Memory Loss

Age 60 seems to be the defining year for many homozygous carriers of the apolipoprotein ɛ4 gene—the time when age-related changes in cognition focus more on memory and begin a steeper decline into mild cognitive impairment and eventually Alzheimer's disease, according to new unpublished observations from a longitudinal study of apo ɛ4 carriers and normal controls.