4 claim verifications about International Agency for Research on Cancer International Agency for Research on Cancer ×
“Aspartame consumption is harmful to human health.”
The blanket claim that aspartame is harmful to human health overstates the evidence. The world's leading food safety authorities—WHO/JECFA and EFSA—have concluded aspartame is safe for the general population within established daily intake limits. IARC classified it as "possibly carcinogenic" (Group 2B), but this reflects limited, inconclusive evidence of a hazard, not proven harm at typical consumption levels. Some emerging research suggests potential concerns at high doses, but these findings are associative, not causal. The claim lacks critical context about dose, population, and scientific uncertainty.
“The contraceptive pill has been officially classified as a top-tier carcinogen.”
The claim contains a kernel of truth: IARC classified combined oral contraceptives as Group 1 ("carcinogenic to humans") — its highest evidence category — back in 2005. However, "top-tier carcinogen" misleadingly implies extreme danger. Group 1 ranks the strength of scientific evidence, not the level of risk. The pill sits alongside processed meat in Group 1, not because they pose equal danger, but because evidence of some carcinogenic effect is strong. The claim also omits that the pill reduces the risk of ovarian and endometrial cancers and that absolute risk increases are small.
“5G towers emit radiation that causes cancer in humans.”
This claim is false. The overwhelming scientific consensus — from the WHO, National Cancer Institute, Health Canada, American Cancer Society, Cancer Research UK, and multiple peer-reviewed reviews — is that no causal link exists between 5G tower radiation and cancer. 5G frequencies are non-ionizing and physically too weak to damage DNA. The most recent large-scale study (February 2026) also found no link. While some research gaps remain, no credible evidence supports the definitive causal claim that 5G towers cause cancer in humans.
“The World Health Organization (WHO) classified processed meats, including deli ham, as Group 1 carcinogens.”
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.