article · International Journal of Environmental Research and Public Health
Head and neck cancers rank as the sixth most prevalent cancer globally, with pesticide exposure during farming suggested as a potential driver. A case-control study conducted at the Ocean Road Cancer Institute in Tanzania investigated the connection between agricultural labour and the risk of developing these cancers. Researchers evaluated 298 cancer cases alongside 305 controls, gathering data on work history, lifestyle habits, and diet through interviews. After adjusting for lifestyle and dietary factors, individuals with a history of agricultural work showed a significantly higher risk of head and neck cancer. This association persisted when restricting the analysis to non-smokers and non-drinkers. Furthermore, individuals with more than a decade of agricultural experience faced an even greater risk, indicating a clear link between long-term farm labour and head and neck cancer.
Agricultural labour supports vast populations, but occupational hazards remain poorly understood in many regions. By establishing a direct link between farming labour and head and neck cancers independent of smoking and alcohol use, this evidence highlights a critical occupational safety concern. It underscores the urgency of identifying specific chemical exposures, improving safety standards, and protecting farmworkers from potential workplace carcinogens.
The abstract does not indicate an application pathway, as it represents early-stage epidemiological research pointing to the need for future studies on specific agricultural carcinogens.
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Cancer is a major global health concern. Head and neck cancers are the sixth most prevalent type of cancer globally; it has been suggested that these cancers can be caused due to pesticide exposure during agricultural activities. In this study, we aimed to investigate whether agricultural labor is associated with an increased risk of head and neck cancers. A case–control study was performed in Ocean Road Cancer Institute in Tanzania: a national, specialized cancer hospital. A total of 298 head and neck cases and 305 controls were included. Occupational history and information about lifestyle factors and diet were obtained by interview. Using logistic regression analyses and adjusting for lifestyle and diet, an increased risk of head and neck cancer was found among workers with a history of agricultural work, with an odds ratio of 2.6 and a 95% confidence interval of 1.60–4.37. When including only non-smokers and non-alcohol users (n = 363), a similar estimate was found. Participants with over 10 years (n = 481) of agricultural work experience, after adjusting for lifestyle and diet, exhibited an odds ratio of 5.1, with a 95% confidence interval of 2.56–9.94. Our findings indicate that agricultural work is associated with the risk of head and neck cancer. Carcinogens in agriculture should be examined in future studies.
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DOI: 10.3390/ijerph22111643
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