This systematic literature review examines the factors that contribute to the spread of fake news on social media. The objective is to ascertain the reasons behind the dissemination of false information and to potentially aid in recognizing and preventing the propagation of misinformation. The review identifies the root causes behind the dissemination of false information and aims to understand why individuals share fake news. By uncovering these reasons, the review seeks to aid in detecting and reducing the spread of false information.