Narcissism is a personality trait characterized by perceptions of grandiosity, superiority, and the need for attention and admiration. There has been an increase in focus on examining the development of narcissism and how the trait influences a range of social and health behaviors. A key feature of narcissism is that it is characterized by high self-esteem with a simultaneously fragile ego that requires continual monitoring and manipulation. Therefore, much of the behaviors narcissists engage in are linked to the drive to maintain perceptions of superiority and grandiosity. In the area of health and well-being, narcissism has been positively correlated with psychological health, a relationship that may be accounted for by self-esteem. However, there has been less research on the relationship between narcissism and physical health and well-being. There is some evidence that narcissism is linked to a variety of physical appearance-oriented health behaviors (i.e., behaviors that could affect body weight or other aspects of physical appearance, including eating and exercise). Narcissism has also been positively linked to risk-taking behaviors, including use of substances, as well as risks that could significantly impact others, including sexual behaviors and risky driving. The relationship between narcissism and health is therefore complex, with some positive correlates (e.g., physical activity), but also various health risk behaviors.
In considering how narcissism might interact with health messages, communicators have to keep in mind that narcissists seem to have some deficits in judgment and decision-making, such as overconfidence and a narrow focus on rewards associated with behaviors. Their behaviors tend to be driven by managing their own ego and by drawing attention and admiration from others to maintain perceptions of superiority and grandiosity. In turn, health communicators may need to rely on creative strategies that tap into these domains of narcissism in order to effectively modify health behaviors among narcissistic individuals. Further research on the influence of narcissism in healthcare seeking and related preventive behaviors would also help to provide a more detailed understanding for how the trait influences health decisions, information that would be useful for both health researchers and practitioners.