Alzheimer's disease is the most common cause of dementia, affecting over 40 million people worldwide. And though it was discovered over a century ago, scientists are still grappling for a cure. Ivan Seah Yu Jun describes how Alzheimer's affects the brain, shedding light on the different stages of this complicated, destructive disease.
TEDed: Lessons Worth Sharing - What is Alzheimer's disease?
Presenter: Ivan Seah Yu Jun
Animator: Chris Boyle
About TED-Ed Originals: TED-Ed Original lessons feature the words and ideas of educators brought to life by professional animators.