Diet and nutrition fill over a quarter million pages of text within the World Library’s virtual bookshelves. GoodReads lists 43,181 titles focused on food and drink, and Amazon’s search results for “diet” yields 186,133 titles for printed books and 30,071 e-book titles. Titles focusing on what and when to eat tout their food and drink regimens as the answer to many problems related to health, energy, and moral character.