How might the arts be in any way connected to the idea of a colon cleanse? With difficulty, I think! C/cleanses don’t appear to be the sort of things that opera singers get into, nor artists, nor musicians - or at least, if they do, they don‘t talk about it much. (Colon Cleanse might be a good name for an aggressive pop group however.)
One blog that talks about both writing and colon cleansing is Write Niche, where one writer mentions a diet called the Sacred Heart Diet (also known as the Cabbage Diet). Sacred Heart Diet? I wonder what Catholics think about that.
One of the writers on this blog is Peter Petterson, who apparently writes on New Zealand. Unfortunately, access was denied to me when I tried to get more information about him.