Paper of all sorts is cellulose, and it's completely edible. It won't harm you. Cellulose is a lipid. People that have lost massive amount of weight so much that it puts their life in danger. These people will get an IV drip of lipids to get nutrition into their system. (I know this from personal experience)

It can be argued that paper is good for you, but it definitely isn't bad for you. Colored paper might be bad, but it would be the coloring agent or ink... not the actual paper.