sliced meats, recommending that their consumption be limited to around 1–2 times per week.
What Are the IARC Groups?
The IARC classification includes several categories based on the strength of the evidence for carcinogenicity:
Group 1: Carcinogenic to humans
Group 2A: Probably carcinogenic to humans
Group 2B: Possibly carcinogenic to humans
Group 3: Not classifiable as to its carcinogenicity to humans
These categories should not be interpreted as a ranking from “most dangerous” to “least dangerous.” They describe the degree of scientific evidence that an agent can cause cancer.
For processed meat, the evidence was considered sufficient for classification in Group 1, particularly because of the observed association with colorectal cancer.
The Takeaway
Cooked ham is a processed meat, so it falls within the IARC’s Group 1 classification. This means there is sufficient evidence that processed meat can cause cancer in humans; it does not mean that eating a portion of ham carries the same level of risk as exposure to every other Group 1 agent.
For this reason, the focus should be on moderation and frequency of consumption. Following dietary guidance that recommends limiting processed meats to occasional portions can help reduce exposure while allowing them to remain part
