Turtles All the Way Down

John Green draws on his own OCD diagnosis to write one of the most clinically accurate and compassionate portrayals of the disorder in popular fiction. Aza's intrusive thought spirals are rendered with an immediacy that never feels exploitative, and the novel wisely refuses to offer a cure — only the possibility of a meaningful life alongside illness. The friendship between Aza and Daisy is genuinely warm, and the grief-of-loss thread is handled with real care. Parents should know that the OCD content — particularly fears around bacterial contamination — may be distressing for anxious readers. The mystery subplot involving a fugitive billionaire is secondary and somewhat thin, and the resolution is deliberately restrained rather than cathartic. For older teens navigating mental health questions, this is an honest and deeply empathetic read.