<p>Many countries have implemented taxes on junk food, believing this to have beneficial health outcomes. The Health Protection Argument maintains that (1) junk food is harmful to health; (2) consumers should reduce their consumption; (3) taxation is an effective means of achieving this goal, and governments should implement effective measures. Consequently, governments should tax junk food for health reasons. However, the premises in this argument are problematic. The definition of junk food and the causal relationship between junk food consumption and health outcomes remain ambiguous. Without clear health standards and justified public reasons, governments should not implement restrictive measures to reduce junk food consumption. Furthermore, the effectiveness of taxation as a policy tool, as well as the justification for prioritizing tax interventions over alternative measures, calls for closer evaluation. Therefore, the conclusion that governments should impose taxes on junk food is not sufficiently justified on health grounds.</p>