Alzheimer's disease is a growing health crisis with more than five million Americans estimated to have it. That number could top 15 million by 2050. British neuroscientist Dr. Joseph Jebelli has studied Alzheimer's throughout his career and recently went on a journey of discovery that produced his new book "In Pursuit of Memory." He joins "CBS This Morning: Saturday" to discuss his book, which he calls an "accessible account" of the disease, and why he was inspired to write about the topic.
