Study Reveals Hidden Environmental Costs of Animal Agriculture Due to Overlooked Mineral Sourcing
A new study published in npj Sustainable Agriculture highlights a significant oversight in assessing the environmental impact of animal agriculture: the exclusion of mineral supplements from life cycle assessments (LCAs). Researchers analyzed 109 peer-reviewed LCAs for farm animals, including cattle, pigs, chickens, fish, and crustaceans, and found that 64% entirely omitted minerals. This omission is even more pronounced in studies concerning fish and crustaceans, with 84% of these studies overlooking mineral supplements, compared to 73% for cattle, 50% for chicken, and 48% for pigs. These minerals, though small in proportion (less than 5% for salmon and 3% for cattle), accumulate to millions of tons annually across billions of farm animals globally. The study emphasizes that the environmental costs associated with mining these minerals, including emissions, harm to wildlife, and biodiversity, significantly increase the overall environmental footprint of meat, fish, dairy, and other animal-sourced foods. M...