How Rising CO2 Levels Reduce Nutrients in Staple Crops

Higher concentrations of atmospheric carbon dioxide are altering the nutritional profile of essential crops like rice, wheat, and beans. While increased CO2 can boost plant growth and carbohydrate production, it often leads to a dilution effect that lowers levels of protein, iron, and zinc. This phenomenon contributes to hidden hunger, where individuals consume enough calories but suffer from critical micronutrient deficiencies. The impact is most severe in regions heavily dependent on staple grains, increasing health risks for children and pregnant women.