Extreme heat disproportionately exacerbates health issues by threatening fresh food supply

Climate change is causing substantial reductions in crop yields. In the recent published comment paper, the profound impact of extreme heat on global food supply has been emphasized by Associate Professor Long, particularly fresh produce, and the cascading health risks that arise. Droughts and heatwaves further exacerbate the situation, particularly affecting cereal production, which can decline by up to 10%. These shifts in food production not only threaten global food security but also contribute to higher food prices and financial strain on lower-income households. Moreover, the health risks extend beyond food availability. As warmer conditions favor the growth of foodborne pathogens, the likelihood of illnesses increases, especially from temperature-sensitive foods like raw meat. Vulnerable groups, such as children, the elderly, and low-income populations, are disproportionately affected, facing higher risks due to their limited ability to cope with heat-related challenges.

This comment paper emphasizes role of enhancing cold chain logistics to maintain food quality amid rising temperatures, while acknowledging the environmental challenge posed by the energy demands and emissions of refrigeration systems. To balance food preservation with sustainability, innovative solutions like lighter transport equipment, better distribution networks, and IoT-based temperature control are recommended.

Attention is also drawn to the unique challenges faced in Asia, where economic disparities and limited electricity in rural areas hinder adequate food refrigeration, exacerbating food spoilage risks. Moreover, these regions' reliance on perishable foods, such as leafy greens, further complicates adaptation efforts, underscoring the need for strategies tailored to local customs and infrastructure.

Papers

Journal: Nature Climate Change

Title: Extreme heat disproportionately exacerbates health issues by threatening fresh food supply

Authors: Yin Long*, Yoshikuni Yoshida, Yuya Kajikawa

DOI: 10.1038/s41558-024-02172-2