Isn't it more important for food producers to explain why American's are so obese? I have seen Americans on Tiktok say that they lost about 40 pounds in weight

Isn't it more important for food producers to explain why American's are so obese? I have seen Americans on Tiktok say that they lost about 40 pounds in weight when they stayed in Europe for a while even when they ate the same amount of food? Shouldn't those concerned about the health of Americans get their priorities right? Is this "Idiocracy" in the making or what?