Recently the video group at Penguin Random House put together featuring YA author extraordinaire Gayle Forman, where she talks about the draw of heavy subject matter for young people. Info here:
Why young people are drawn to dark themes in YA literature | Author Gayle Forman - Author Gayle Forman (I WAS HERE) tackles a question she frequently gets: Why are young people so drawn to darkness in the books they read? Social changes and brain mapping studies might provide a clue.