By Jacqueline Howard
July 6, 2016

The risk for developing devastating Alzheimer's disease may be detectable in healthy adults younger than expected, and new studies reveal how.

Tests already exist to determine a genetic risk for familial Alzheimer's disease, which is typically early-onset and less common than sporadic Alzheimer's disease. Both types cause dementia. However, identifying risk for the sporadic variety of Alzheimer's -- which accounts for about 95% of all Alzheimer's cases -- is not as simple.