New (and old) research suggest that the nutrient balance in plants is being upset by the increase in carbon dioxide in the atmosphere. Plants use carbon dioxide much like we depend on oxygen. It looks like increased levels of carbon dioxide shift the balance of nutrients in plants with decreases in proteins and other nutrients and increases in glucose (sugar). This will have global implications since many people depend on a plant-based diet for protein. Even the bees are affected because the nutrients in pollen has changed. The relationship between increased carbon dioxide and plant nutrition is finally getting attention in the research communities. This may very well turn out to be a Big Deal.
The Great Nutrient Collapse: The atmosphere is literally changing the food we eat, for the worse. And almost nobody is paying attention.
Politico, Sept. 13, 2017 by Helena Bottemiller Evich