The Power of Art: Can creativity cure the sick?
Can unleashing inner creativity heal the sick?
Nine-year-old leukaemia patient Ryan is in no doubt. "It makes you feel like you can do anything really," he says of the art therapy classes he enjoys, thanks to a US charity.
The American military has also long embraced art therapy, using it as a core treatment to help veterans recover from post-traumatic stress disorder.
Now top brass are leading research to find out why this kind of treatment works.
As Jane O'Brien reports in the second part of our Power of Art series, mounting clinical evidence of art's medical benefits could bring new and exciting ways to harness its power.
Produced by the BBC's Matt Danzico