Aspartame (artificial sweetener) and Health
In 2023, the International Agency for Research on Cancer (IARC), part of the World Health Organization (WHO), classified aspartame as "possibly carcinogenic to humans" (Group 2B), citing limited evidence for its potential to cause cancer in humans, specifically hepatocellular carcinoma (liver cancer).
However, other health organizations have evaluated aspartame differently:
Joint FAO/WHO Expert Committee on Food Additives (JECFA): This committee reaffirmed the acceptable daily intake (ADI) for aspartame at 40 milligrams per kilogram of body weight per day, indicating no health concerns at this level.
European Food Safety Authority (EFSA): EFSA concluded that aspartame and its breakdown products are safe for human consumption at the ADI of 40 mg/kg/day, based on comprehensive risk assessments.
U.S. Food and Drug Administration (FDA): The FDA maintains that aspartame is safe for the general population when consumed within the established ADI, based on extensive scientific evidence.
The discrepancy between IARC's classification and the assessments of other organizations arises from differences in their evaluation criteria. IARC's classification reflects the strength of evidence regarding the potential carcinogenicity of aspartame, while other organizations assess the risk based on specific exposure levels and conditions. IARC's Group 2B classification indicates that there is limited evidence suggesting a potential carcinogenic effect, but it does not necessarily mean that aspartame is a significant cancer risk at typical consumption levels.
In summary, while IARC has classified aspartame as "possibly carcinogenic to humans" based on limited evidence, other health authorities, including JECFA, EFSA, and the FDA, have evaluated aspartame and concluded that it is safe for human consumption within the established acceptable daily intake levels. These differing assessments highlight the complexities in evaluating food additives and the importance of considering the context and methodology of each evaluation.
sources:
Aspartame hazard and risk assessment results released
Aspartame | EFSA - European Union
Timeline FDA Activities and Significant Events Addressing Aspartame