According to the book Why is your child hyperactive published in 1975 by the allergist Benjamin Feingold, sugar, artificial coloring and flavoring would cause ADHD, also known as "attention deficit hyperactivity disorder ". In the book, Feingold says that these substances are the reason why kids are developing ADHD. Since the 1970s, many researchers have proven that these are not factors that influence a kid’s hyperactivity.