Beliefs have long been posited to be a predictor of behavior. However, empirical evidence of the relationship between beliefs and behaviors has been mostly correlational in nature and provided conflicting findings. Here, we investigated the causal impact of beliefs on behaviors across three experiments (N=659). Participants rated the accuracy of a set of health-related statements (belief pre-test) and chose corresponding campaigns to which they could donate funds in an incentivized choice task (behavior pre-test). They were then provided with relevant evidence in favor of the correct statements and against the incorrect statements. Finally, they rated the accuracy of the initial set of statements again (belief post-test) and were given a chance to change their donation choices (behavior post-test). We found that evidence changed beliefs and this, in turn, led to behavioral change. In two pre-registered follow-up experiments, we replicated these findings with politically charged topics, and found a partisan asymmetry in the effect of belief change on behavioral change in Democrats (but not in Republicans). We discuss the implications of this work for interventions aimed at promoting constructive behaviors such as recycling, donating, or employing preventative health measures.