Parasites: The Cancer Within is a 2024 independent documentary-style film that presents the theory that parasitic infections are a primary, hidden driver behind the development of cancer and other chronic illnesses. Structured through interviews and commentary from figures within the alternative medicine space, the film argues that conventional oncology overlooks the systematic impact of internal parasites on human tissue. It heavily focuses on promoting alternative, non-traditional health protocols-specifically the repurposed use of anti-parasitic medications like fenbendazole-as viable treatments for advanced, stage 4 cancers.