One of the best things about language is that it is constantly adapting, evolving. As new words become necessary, they are invented or otherwise created, then — slowly but surely — incorporated into everyday use.
Generally, this happens when an idea for a thing (or modifier of a thing) or action exists, but there is no existing term corresponding to that idea.
Having been dieting for 10 days, I find myself having coined a word:
fiberrhea [fie-buh-ree-uh] (noun). An intestinal disorder brought about by the sudden and dramatic increase of intake of raw fruits and vegetables, especially of those very, very high in fiber.
I am not sure why this word has taken so long to be invented, but I’m happy to have created it. I guess.