Individuals who complain of chronic low back pain may also experience some changes to their brain's activity. A recent study at McGill University associated chronic pain with reduced brain gray matter and impaired cognitive ability. This just might lend some credence to comments by pain sufferers (e.g., when my back hurts I just can't think straight). It certainly might provide impetus for those who do struggle with chronic back pain to take another look at strategies that could reduce the pain. The good news, according to the researchers, was that brain activity seemed to normalize after successful treatment.