The Effect of Social Media Influencer Warranting Cues on Intentions to Use Non-Hormonal Contraception.

Young women increasingly get sexual health information from social media influencers, who use persuasive communication and can alter attitudes, intentions, and behaviors. Contraception is a commonly discussed health topic among influencers on social media. Previous research suggests that influencers negatively frame and encourage the discontinuation of hormonal contraception. At the same time, influencers also encourage the uptake of less effective non-hormonal options, such as fertility awareness-based methods. Though descriptive content analysis work details these patterns in influencer contraceptive messaging, there is no experimental research that explains message effects. The purpose of this study was to experimentally test the effect of influencer contraceptive-related messaging on behavioral health intentions. This study introduces warranting theory as a potentially valuable model for explaining online health communication message effects. Specifically, this study tested the effect of influencer messages containing sponsorship and medical disclaimers on intentions to use non-hormonal contraception. U.S. females ( n  = 296) ranging in age from 18-29 years old participated in a survey. Findings suggest that the interaction led to decreased intentions to use non-hormonal contraception. However, findings did not support a relationship between influencer messaging and impressions, which highlights potential boundary conditions for warranting theory and high-risk health behaviors. Additionally, there was a positive relationship between perceived trustworthiness and expertise of the influencer and intention to use non-hormonal contraception. Future research should test influencer messaging using real social media content and consider the effect of parasocial relationships. Practical implications highlight the need for comprehensive contraceptive counseling.