#writerscoffeeclub
Should books include a content warning?
Books already contain content warnings by how they are categorised, their cover images, blurb, etc. Adult, Young Adult, Children's, Romance, etc.
This is where the author can give the reader a good idea as to what's inside. If you feel the need for anything more specific, you probably haven't written your back cover (or web-page description) properly, or you need to find a better cover image.