Mother Nature Network (blog) | What's the difference between Alzheimer's disease and dementia? Mother Nature Network (blog) Alzheimer's is the most common type of dementia, accounting for 60 to 80 percent of cases. It's a progressive disease marked by memory loss, confusion and disorientation. The symptoms usually start off as minor — forgetting names or dates or other ... It's Time to Change the Way We Talk About Aging When Memory Loss Should Concern You |