Thursday, Sep 10, 2026 The claims desk. Receipts included. POWERED BY LENZ ↗
IsThis

In 2015, WHO’s IARC classified processed meat, including ham, as Group 1 carcinogenic.

The Claim

The World Health Organization (WHO) classified processed meats, including deli ham, as Group 1 carcinogens.

Verified by Lenz ·

The Short Version

This claim is substantively accurate. In October 2015, IARC — the cancer research agency of the WHO — classified processed meat as a Group 1 carcinogen, and explicitly listed "ham" as an example. WHO itself communicates this classification on its own website. Saying "WHO classified" is reasonable shorthand, though technically the classification comes from IARC's Monographs program. "Deli ham" falls under the processed meat category rather than being individually evaluated. The core claim holds up well.

Caveats

  • The Group 1 classification was formally issued by IARC (WHO's cancer agency), not by WHO's broader institutional apparatus — though WHO publicly endorses and communicates the finding.
  • Group 1 indicates strong evidence that something causes cancer, not that the level of risk is comparable to other Group 1 agents like tobacco smoking.
  • 'Deli ham' is not individually classified — it falls under the broad category of 'processed meat,' with 'ham' listed as one example by IARC.

The Receipts

  1. Cancer: Carcinogenicity of the consumption of red meat and processed meat

    World Health Organization

  2. IARC Monographs evaluate consumption of red meat and processed meat

    IARC Monographs evaluate consumption of red meat and processed meat

  3. IARC evaluates consumption of red meat and processed meat - PAHO/WHO

    PAHO/WHO

  4. Red Meat and Processed Meat Consumption - Cancer Trends Progress Report

    National Cancer Institute

  5. WHO report says eating processed meat is carcinogenic: Understanding the findings

    Harvard T.H. Chan School of Public Health

  6. Known and Probable Human Carcinogens | American Cancer Society

    American Cancer Society

  7. Our reaction to the launch of the US dietary guidelines 2025-2030

    World Cancer Research Fund

  8. Red and Processed Meat and Cancer | American Cancer Society

    American Cancer Society

  9. Red meat, processed meat and cancer: an update on the new classification by the IARC

    ANSES (French Agency for Food, Environmental and Occupational Health & Safety)

  10. IARC Monographs evaluate consumption of red meat and processed meat - UICC

    UICC

+ 4 more sources — see the full list on Lenz

Filed Under

deli hamInternational Agency for Research on Cancerprocessed meatWorld Health Organization

More Fact Checks