In 2018, the U.S. Food and Drug Administration, acting on feedback from a group of veterinary researchers, began investigating whether the growing popularity of grain-free dog foods had led to a sudden increase in disease. life-threatening heart disease in dogs, dilated cardiomyopathy.
Four years later, the FDA has found no strong link between diet and dilated cardiomyopathy. He also did not reject such a link, and the search continues. However, the publicity surrounding this problem has reduced the once-promising market for grain-free dog food.