Is processed meat a carcinogen?

Yes, processed meat is classified as a carcinogen. The World Health Organization (WHO) has labeled processed meats as a Group 1 carcinogen, which means there is sufficient evidence to conclude that they cause cancer, particularly colorectal cancer 1. This classification is based on studies showing that processed meats, due to the presence of substances like sodium nitrite, can form carcinogenic compounds such as nitrosamines during processing or cooking 2 3.

Experts like Dr. William Davis highlight that while nitrites themselves might be benign, the problem arises when they form nitrosamines upon heating, which are highly carcinogenic 3. Dr. Rhonda Patrick also discusses the role of nitrosamines in damaging the DNA of cells in the colon, leading to cancer development 4.

Therefore, consuming processed meats regularly can significantly increase the risk of certain cancers, making it advisable to limit intake 5.