>Red meat was classified as Group 2A, probably carcinogenic to humans. What does this mean exactly? In the case of red meat, the classification is based on li

>Red meat was classified as Group 2A, probably carcinogenic to humans. What does this mean exactly? In the case of red meat, the classification is based on limited evidence from epidemiological studies showing positive associations between eating red meat and developing colorectal cancer as well as strong mechanistic evidence. >Limited evidence means that a positive association has been observed between exposure to the agent and cancer but that other explanations for the observations (technically termed chance, bias, or confounding) could not be ruled out.[1] ## Bonus content on processed meats ## >Processed meat was classified as Group 1, carcinogenic to humans. What does this mean? This category is used when there is sufficient evidence of carcinogenicity in humans. In other words, there is convincing evidence that the agent causes cancer. The evaluation is usually based on epidemiological studies showing the development of cancer in exposed humans. >In the case of processed meat, this classification is based on sufficient evidence from epidemiological studies that eating processed meat causes colorectal cancer. [1] https://www.who.int/features/qa/cancer-red-meat/en/ https://www.who.int/features/qa/cancer-red-meat/en/