No, they are not unique but that does not mean that you or your readers would not benefit from writing about them. Your shares might really help someone else whom the universe guides to your words because they will help them. Here is my deeply personal share on suicide that I heard from many in comments helped them either with their own depression or because they had lost friends or family to suicide. https://medium.com/the-pom/dizain-of-suicide-72bcde4dc8d8