(NEWSER) – Dylan Siegel is just 7 years old, but he's already raised more money for glycogen storage disease "than all the medical foundations and all the grants combined. Ever," says Dr. David Weinstein, who studies the rare liver disease at the University of Florida. How did Dylan do it? The little boy's best friend, Jonah Pournazarian, has the hereditary disorder, so when Dylan was just 6, he told his parents he wanted to raise money for Jonah. They suggested a lemonade stand or bake sale, but "he's like 'Don't patronize me. I want to do something big,'" his dad tells ABC News. By the next day, Dylan had written a book.