The single-gene mutations directly responsible for early-onset Alzheimer's disease do not seem to be involved in late-onset Alzheimer's, and researchers have not found a specific gene that causes the late-onset form of the disease.
The NFLâs worst defense in 2015 are expected to be the Atlanta Falcons, Jacksonville Jaguars, Tennessee Titans, Chicago Bears and Tampa Bay Buccaneers (not necessarily in that order).
The Detroit Lions are 7-point favorites at home against the Chicago Bears. Joe Sargent/Getty ImagesJay Cutler is sad. The Chicago Bears are probably the most disappointing team in the NFL. They are loaded with talent on offense. They have an offensive coach. And yet their offense is ranked in the middle of the pack.