Dylan Siegel, 7, would do anything for a friend -- especially if that friend is his best one, 8-year-old Jonah Pournazarian.

GSD does not have a cure. And, to Dylan, that is unacceptable.

"It is now reality. It's not just a dream that these children can be cured," Dr. David Weinstein, who runs the University of Florida lab, told Fox 17.

To date, Dylan has raised more than $750,000 in the fight against GSD. Before the money began pouring in from book sales, funding for Weinstein's research was falling flat, ABC News reported. "Chocolate Bar" has given those suffering from GSD renewed hope for a better tomorrow.

"It's an amazing thing the fact that he didn't just have the idea, he followed through and he actually did it," Debra Siegel, Dylan's mom, told LEX 18. "And he was so persistent trying to get us to publish the book and sell the book. And he was really, really motivated."

You can visit the "Chocolate Bar" website to purchase a copy and learn more about Jonah's story.