What the Health is a 2017 documentary film which critiques the health impact of meat, fish, eggs and dairy products consumption, and questions the practices of leading health and pharmaceutical organizations. Its primary purpose is to advocate for a plant-based diet. The documentary has been criticized by a number of medical doctors, dietitians, and investigative journalists for what they describe as confusing causation with correlation, cherry picking science studies, biased sources, distortion of study findings, and using "weak-to-non-existent data".