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Carbon Dioxide May Rob Crops Of Nutrition, Leaving Millions At Risk

Two new studies suggest that changing atmospheric conditions could reduce protein and iron in food, leading to more health problems for people in countries where malnutrition is already a problem.
Indian female farmers sow paddy in a field during monsoon season near Allahabad on July 19, 2014. The monsoon rains, which usually hit India from June to September, are crucial for farmers whose crops feed hundreds of millions of people. / SANJAY KANOJIA / Getty Images

Rising carbon dioxide levels could have an unexpected side effect on food crops: a decrease in key nutrients. And this could put more people at risk of malnutrition.

A 2014 study showed that higher levels of carbon dioxide in the atmosphere are likely to put a dent in the protein, iron and zinc content of rice, wheat, peas andother food crops. , an environmental health researcher at Harvard's School of Public Health, was the lead author on that study.

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