In her new book Crazy Sexy Cancer Tips, writer Kris Carr looks at cancer from the perspective of a young adult who confronts death just as she's discovering life.

Re-Mission is available to young people with cancer free of charge. The game can be ordered or downloaded here.

That research is especially important for veterans, he said, because many are young and will risk serious adverse effects, like cancer and kidney damage, if they have to take the drugs for decades.