Did you know that the food we throw away could be silently fueling a global health crisis? Antimicrobial resistance (AMR), a growing threat linked to millions of deaths annually, might be finding a breeding ground in our food waste, according to alarming findings from experts at the Food and Agriculture Organization of the United Nations (FAO). But here's where it gets controversial: while we often think of landfills as a simple solution for waste disposal, they could actually be accelerating the spread of drug-resistant microbes. Infectious Diseases of Poverty, a peer-reviewed journal, recently published a study revealing that improper handling of food loss and waste (FLW) can act as a reservoir for AMR, while proper methods like optimized composting might help mitigate this risk.
Led by FAO experts, including Junxia Song, Chief of the One Health and Disease Control Branch, the study underscores the urgent need to integrate FLW management into global AMR strategies. "Linking food loss and waste to AMR is both timely and strategic," Junxia explains, "as it opens doors for coordinated action that tackles waste while bolstering efforts to contain AMR."
The agricultural sector, particularly animal production, is a major player in this crisis, accounting for nearly three-fourths of global antibiotic sales. Residues and resistance genes from these drugs have been detected in retail food, from meat to vegetables like carrots and tomatoes. This isn’t just a theoretical concern—AMR reduces the effectiveness of life-saving medicines, making infections harder to treat.
FAO has been at the forefront of addressing this issue, advocating for reduced drug use in the food chain and holistic approaches aligned with One Health principles. In 2025, member countries urged FAO to ramp up technical support for nations to invest in research and policies combating AMR. Yet, the role of FLW in spreading AMR remains underexplored, making this study a critical contribution.
And this is the part most people miss: food waste often contains higher levels of resistant genes than sewage sludge or swine manure, traditionally seen as major AMR catalysts. This is particularly concerning as countries increasingly repurpose FLW for energy or feedstock. Animal-derived waste, especially from fish, poses the greatest risk, emphasizing the need for swift waste collection and control.
Composting, though eco-friendly, can sometimes exacerbate the problem if not optimized, highlighting the importance of full-cycle processes, including high-temperature treatments. Anaerobic digestion, used in biogas production, shows promise in reducing AMR but requires further research.
Landfills, where much of our waste ends up, are a double-edged sword. Beyond standard AMR risks, they mix biological and chemical wastes, creating a toxic brew that can leach into water sources or be scavenged by animals, amplifying the spread of resistance.
The report calls for more data from low- and middle-income countries, where antimicrobial use is less regulated and projected to rise. It also stresses the need for studies on antifungal resistance, another growing concern. FAO’s InFARM System offers a global platform for data collection, while initiatives like RENOFARM support countries in reducing antimicrobial reliance.
"Food safety is everyone’s responsibility," says Thanawat Tiensin, FAO Assistant Director-General and Chief Veterinarian. "Tackling AMR through better FLW management requires collaboration across sectors."
Controversial question for you: Should countries prioritize reducing food waste over repurposing it for energy or feedstock, given the AMR risks? Share your thoughts in the comments—let’s spark a debate!
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