i don't think it's because people are lazy.
i think that's a part of it.
Some of it is our diet. Yeah we may eat too much.
But look at our foods...
Only 5% of the US population are farmers. Just imagine all the food they produce. Look at how many hormones we inject into cattle or any other foods to make them bigger. Stuff to make them cleaner, stuff to make it last longer.
Look at our homes. so much bigger than other countries. Everything is bigger in the states.... Ofcourse the people are gonna be bigger.
It's a combination of everything...