Alzheimer's Disease Starts in Childhood, With Symptoms Found in Babies Less Than a Year Old, Study Shows Published Apr 18, 2018 at 3:04 PM EDT Updated Apr 19, 2018 at 11:09 AM EDT A man holds a model of a human brain. The brain damage that leads to Alzheimer’s disease may begin far earlier than we thought. Marcelo Hernandez/Getty Images A new study found shocking evidence to suggest that Alzheimer