Young adult fiction or young adult literature (YA) is fiction published for readers in their youth. The age range for young adult fiction is subjective. Some sources claim it ranges from ages 12-18, while authors and readers of "young teen novels" often define it as written for those aged 15 to the early 20s. The terms young adult novel, juvenile novel, teenage fiction, young adult book, etc., refer to the works in this category.
The subject matter and story lines of young adult literature are typically consistent with the age and experience of the main character, but this literature spans the spectrum of fiction genres. Stories that focus on the specific challenges of youth are sometimes referred to as problem novels or coming-of-age novels. According to 2013 statistics by the speculative fiction publisher Tor Books, women outnumbered men by 68% to 32% among submissions of this type of fiction to publishers, a gender distribution converse to that observed, for example in adult science fiction and most fantasy fiction.