Harry Potter is working his magic in children's hospitals.
Doctors say that the troubles and traumas faced by Harry are helping children deal with their worries about going into hospital.
One young girl even got over her fear of needles after staff used 'Harry's magic' to help her relax.
A nurse at Great Ormond's Street hospital in London said patients could relate to the boy wizard because he goes through all the things they are feeling - like being away from home and making new friends in a strange environment.
Also Harry has to deal with unusual illnesses and situations like the death of his parents - which can help children come to terms with their own problems.