News Release

Climate change linked to health crises and food insecurity

Spread of illness particularly affects migrant workers

Peer-Reviewed Publication

Columbia University's Mailman School of Public Health

Climate and health expert Lewis Ziska at Columbia University Mailman School of Public Health contributed to a new Lancet Report released on Thursday, October 26, 2022 including a U.S. Brief that tracks the impact of climate change on human health and highlights the health crises of extreme heat, infectious diseases, air pollution, mental health impacts, and the unequal burdens of climate change. It also provides policy recommendations for ensuring health equity is maximized in climate policy and action. 

Ziska, professor of environmental health sciences has written the section about Climate Change and the U.S. Food System. In the piece, he makes the following points:

While climate change and extreme weather events are likely to affect agricultural systems at the national, regional and local levels, reduce production and lead to food insecurity, there are additional challenges that impact another fundamental asset of U.S. agriculture -- that of migrant workers, who are essential to agricultural productivity and represent approximately 75 percent of all U.S. agricultural workers. Ziska states, “Such workers are essential to food systems, but are also among the most vulnerable to climate change impacts on their health and well-being.”

These workers are especially susceptible to extreme heat and heat related illnesses, from mild symptoms such as fatigue, vomiting, dizziness, to life threatening heat strokes and possible chronic kidney diseases. According to research by Ziska, we are also seeing the effects of increasingly greater chemical exposure among agricultural workers.


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