An Afghan man with mental health problems shields his face from the camera as he is chained to a wall of a room at the Mia Ali Baba shrine, in line with a traditional belief that spending 40 days chained in isolation at the shrine can cure the illness, in Jalalabad July 9, 2012.  Afghanistan is struggling to fight the mental health problems that afflict some of the population after decades of violence, according to Abdul Rasool, an official from the health department of Jalalabad province. REUTERS/Parwiz