Monday, August 27, 2018

As CO2 Levels Climb, Millions at Risk of Nutritional Deficiencies

An additional 290 million people could face malnutrition by 2050 if little is done to stop the rise of greenhouse gas emissions, a study finds.

Global combined risk of lost iron, zinc and protein, assuming average concentrations of CO2 reach 550ppm by 2050. Dark blue indicates a low score (zero), dark red indicates a high score (nine) and indicates no data. (Source Credit: Smith & Myers (2018)] Click to enlarge.
The increased presence of CO2 in the atmosphere could cause staple crops to produce smaller amounts of nutrients such as zinc, iron, and protein, the researchers say.

Using international datasets of food consumption, the study estimates that these changes could cause an additional 175 million people to be zinc deficient and an additional 122 million people to be protein deficient by 2050.

The findings show that malnutrition is most likely to affect parts of the world that are already grappling with food insecurity, such as India, parts of North Africa, and the Middle East, the lead author tells Carbon Brief.

Read more at As CO2 Levels Climb, Millions at Risk of Nutritional Deficiencies

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