A major new assessment from the World Health Organization (WHO) has revealed the staggering global toll of unsafe food, estimating that contaminated food causes around 866 million illnesses and 1.5 million deaths every year worldwide. The findings, published in the medical journal The Lancet Global Health, highlight a persistent and largely preventable public health crisis affecting every region of the globe.
The report shows that young children are among the most vulnerable, with those under five accounting for roughly one-third of all foodborne illness cases. Diarrheal diseases, which are especially dangerous in early childhood, remain a leading cause of death linked to contaminated food, underscoring ongoing gaps in sanitation, nutrition, and access to healthcare in low-resource settings.
Beyond the human toll, the study also details the enormous economic burden of foodborne disease. Researchers estimate that productivity losses linked to unsafe food can reach hundreds of billions of dollars annually, with global costs varying significantly depending on regional income levels and purchasing power. The report warns that the true scale of the economic impact is likely underestimated due to underreporting and uneven data collection across countries.
WHO Director-General Tedros Adhanom Ghebreyesus emphasized that unsafe food has long been a major but underrecognized global health threat, arguing that the world has lacked a comprehensive understanding of its full scale until now. The agency is calling for renewed international attention to food safety as a central pillar of public health policy.
The study identifies chemical contamination as the leading cause of death from foodborne illness, accounting for a large majority of fatalities. Substances such as inorganic arsenic and lead are highlighted as major contributors, both of which are associated with long-term risks including cardiovascular disease and cancer. These findings point to persistent environmental and industrial contamination entering the food chain, particularly in agricultural systems with weak regulatory oversight.
Regionally, the burden is disproportionately concentrated in Africa and Southeast Asia, which together account for the majority of foodborne illnesses and a significant share of global deaths. The report links this disparity to uneven infrastructure, limited access to clean water, and gaps in food safety regulation and enforcement.
In response, the WHO is urging governments to strengthen food safety systems through improved water sanitation, hygiene standards, safer agricultural practices, and stricter industrial pollution controls. It also stresses the need for expanded healthcare access for vulnerable populations, arguing that many deaths could be prevented with basic interventions already available in higher-income countries.
As global food systems become increasingly interconnected, the report warns that failures in regulation and safety in one region can quickly become a worldwide health risk, reinforcing the need for coordinated international action to address contaminated food as a major and ongoing global health emergency.
