I don't like people tampering with my food. It even bothers me that they add vitamins. Who knows what else they're adding that they're not telling us about? It wouldn't surprise me in the slightest if that turned out to be true. We already know that girls are entering puberty earlier and earlier. It has to be due to the food (the hormones in meat and milk), and all the additives. It's also from the synthetic materials that are everywhere.
What they need to do is concentrate on food safety. That should be their number 1 priority.
But, think about it, if they're going to add cloned foods & frankenfoods without telling us, doesn't it make you wonder what else they're adding without telling us?
I would say you are partly correct, it is the diet. Americans have the best diet in the world. What is the average height of a 16 year old girl today and how does it compare to fifty years ago? On the farm health animals breed earlier.
Do you know what type of hormone beef farmers us and why?