As measured in PET scans, older adults with apnea had significantly higher levels of tau in the entorhinal cortex on average than those who did not have apnea, after controlling for age, sex, education, cardiovascular risk, and other factors, reported Diego Carvalho, MD, of the Mayo Clinic in Rochester, Minnesota, and colleagues, in an early-release abstract from the American Academy of Neurology meeting to be held here in May. {read more here}