Is the NFL concerned by head injuries?

Brandon Meriweather, Todd Heap
In this photo made Oct. 17, 2010, Baltimore Ravens tight end Todd Heap, left, takes a hit from New England Patriots safety Brandon Meriweather, right, during an NFL football game at Gillette Stadium in Foxborough, Mass.
AP Photo/Winslow Townson

Head injuries, and their implications on long-term health, are becoming a bigger issue for football players. But does the NFL really care? One sportswriter isn't so sure.