I read this book at 15 or 16. Now I'm older and I saw the netflix serie. I don't think reading this book too young is very harmful (but this is my point of view), but it is different with the serie. It is a serie for teenagers (or it looks like ? No I think it is, the aim is to sensitize about harassment, rape, suicide... ), but in season 2 for exemple, we could watch a controversial (and violent) scene ._.