World Alzheimer’s Day is Sept. 21.

55 million people across the globe are affected by Alzheimers.

The day is meant to raise awareness and break down the stigma around the disease and other dementia.

A new children’s book is illustrating the experience of dementia and Alzheimer’s disease told from a child’s perspective.

Nate Bertone, author, joined “The Rush Hour” on Friday to discuss the book, “Nana Nana.”