Ha Ha - you're dead on correct. You can see this at many resorts. The philosophy in our capitalist society is the rich guy gets richer - and fatter - as he sits behind a desk making money. The wife, usually stay-at-home, goes to the gym, plays tennis, gets nipped and tucked, screws the pool man, and begrudingly slides herself under all the weight that got her in that position to begin with.
This may not be John Kerry's story, of course, but is a generally accepted rule of thumb between 400-pound monsters and 115-pound plastic Barbies.