I hope you are not claiming a causal relationship between the two. If you are, you should provide some evidence.
Our obesity problem has much more to do with us having a higher standard of living (more and higher calorie food available, even for the poor) and much less physically strenuous lifestyles than in past generations. More calories and less exercise inevitably leads to obesity.
Another major factor has been the obsession with reducing dietary fats. Because reducing the fat content of food also reduces the flavor, food suppliers make up the difference with sugars. But while consuming dietary fats help trigger a sense of satiety and fullness, consuming sugars trigger cravings for more sugar.
No, I'm not claiming this, but these two facts make me suspect this relationship is possible. And I don't understand the U.S. government's attempts to sink labelling GMO containing food laws in other countries. The people's right for information harms noone.
Well, consider the French. Their living standard is high enough to rid themselves of food shortage, but still thir population is less obese.