People’s belief in free will is shown to influence the perception of personal control in self and others. The current study tested the hypothesis that individuals who believe in free will attribute stronger personal blame to obese people and to people with mental illness (schizophrenia) for their adverse health outcomes. Results from a sample of 1110 participants showed that the belief in free will subscale is positively correlated with perceptions of the controllability of these adverse health conditions. The findings suggest that free will beliefs are correlated with attribution of blame to people with obesity and mental health issues. The study contributes to the understanding of the possible negative implications of people’s free will beliefs.