Hope may be in sight for millions of Alzheimer's patients as scientists have found a way to slow disease progression and treat its symptoms using only light and sound.

Alzheimer's affects roughly 5.8 million Americans, according to the Centers for Disease Control and Prevention. The progressive disease is the most common form of dementia and is associated with memory loss and cognitive decline in regions of the brain involved in thought, memory and language. Flickering Light Can Slow Alzheimer's Disease, MIT Scientists Say (newsweek.com)