Data from a stated choice experiment in Kenya’s Lake Victoria region shows how consumers respond to dual labels on fish products, and how their responses to each label interact. Findings suggest that, faced with a dual information policy, consumers react rationally to dual health attribute labeling, and that nutrient labels and contaminant warnings can function concurrently, indeed even be mutually reinforcing, but pose a risk of inadvertently concentrating unhealthful consumption in less responsive subpopulations.