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February 2025: Asbestos is classified as carcinogenic to humans by the WHO’s International Agency for Research on Cancer (IARC) and identified as a specific cause of mesothelioma and cancers of the lung, larynx and ovary, primarily among occupationally exposed workers. Epidemiological evidence for occupational asbestos exposure as a cause of gastrointestinal cancers among workers has been suggestive, limited or inadequate. The objective of this work was to conduct a systematic review and meta-analyses of occupational asbestos exposure and esophageal, stomach and colorectal cancer risk. The meta-analyses support a causal link between occupational asbestos exposure and the risk of esophageal, stomach, and colorectal cancer. Read more in Occupational and Environmental Medicine.