Sinnlfuencers are a new popular type of endorsers who focus on societal relevant issues. Against this backdrop, the question arises whether their success factors are the same as for traditional influencers or whether new success factors become relevant. In this work, we build up a case of Sinnfluencers for healthy nutrition and examine the five characteristics attractiveness, fitness, expertise, benevolence and obesity. Based on an online experiment involving 1332 data sets analyzed in SmartPLS we find that the traditional criteria fitness and attractiveness are most important. Based on these surprising results we propose implications for research and management.