This man has survived on nothing but a candy diet… and he wrote a book about it. Paul Rudnick’s “I Shudder” describes his life on nothing but sugary delights. “There was never a time when I was not refined-sugar-centric,” he said flatly. “I was always appalled by almost all other foods; I could not understand why anyone wanted them. I did not like the taste, the smell, the concept,” he.