Increasing levels of carbon dioxide (CO2) produced by human activity are stripping away the nutritional benefits of staple food sources such as rice and wheat. The study, which was conducted by the Harvard T.H. Chan School of Public Health and released on Monday, also revealed that 175 million people could suffer from zinc deficiency and another 122 suffer from protein deficiency by 2050.

It also pointed out that more than a billion women and children may lose a large percentage of their iron intake, which could put them at risk of anemia and other illnesses.

Sam Myers, the main author of the study, said the research shows how man-made decisions related to “what we eat, how we move around and what we decide to buy,” is making our aliments less nutritional, “putting our health at risk.”

The study indicated that elevated atmospheric levels of CO2 have resulted in harvests with decreased nutritional value. It showed that areas with high levels of atmospheric CO2 resulted in harvests with three to seventeen percent less protein, iron and zinc.

via It’s Official: Burning Coal, Auto Exhaust & Air Pollution Making us Stupid