The 74-year-old Hanna was director of the Columbus Zoo from 1978 to 1992 and still serves as its director emeritus.
The iconic jazz musician, who has a follow-up to his 2015 album with Lady Gaga coming out in the spring, has reportedly been battling the disease since 2016.
Mary Trump, the president’s niece, is writing a book that will detail her uncle’s mistreatment of his father during his Alzheimer’s decline.
A new tell-all by Mary Trump promises to expose the president's “appalling” treatment of his father.
"Many difficult decisions are part of the slow, steady decline of Alzheimer’s. But never did I imagine that I wouldn’t be by her side when she needed me."
The TV doctor hopes his experience will spur others to look for early indicators in loved ones to potentially slow the disorder.
We asked dermatologists whether the aluminum found in traditional antiperspirant is really THAT bad for us.
The early stages of dementia are likely a sign of Alzheimer's disease, she said in a statement.
Just because you're young doesn't mean you shouldn't care about dementia in the future.
Breaking down what you need to know about the brain conditions.