Doctors say older people who had a stent put into the main artery of their brain to prevent strokes got a real bonus: improved mental function.The small study, which included 37 patients, found that 16 (43 percent) of them scored higher on a battery of 11 cognitive tests one year after the procedure, according to Dr. Rodney Raabe, chief of radiology at Sacred Heart Medical Center in Spokane, Wash. Read the entire article here.