After her mother's dementia diagnosis, Nawaal Weitz found affordable memory books on Temu that help preserve family stories before they fade away.

A new book has re-written the way we look at dementia and offers a fresh insight into how to improve the care that sufferers receive.

Like Mr. Hackman, about seven million Americans have Alzheimer’s, a type of dementia, and their family members, like his wife, Betsy Arakawa, 65, often help care for them as the disease progresses.