Public service ads often try to raise fear in an audience to induce people to change unhealthy behaviors. if fear appeals are used, it is crucial to provide the audience with to increase the likelihood of behavior change as many terrifying images as possible

 If fear appeals are used, it is crucial to provide the audience with "Specific recommendations for how to reduce the unhealthy behaviors" to increase the likelihood of behavior change.

A fear appeal is an influential message that endeavors to stimulate fear with a specific end goal to redirect conduct through the risk of approaching threat or mischief. It introduces a hazard, displays the defenselessness to the hazard, and after that may, or may not propose a type of defensive activity.