I wasn't saying this at all... the operative word in my statement was "appears"... perhaps the correlation is entirely coincidental. Many correlations we note w

I wasn't saying this at all... the operative word in my statement was "appears"... perhaps the correlation is entirely coincidental. Many correlations we note when we don't have enough data turns out to be coincidence - we draw incorrect conclusions and hey presto, the next great fad begins. I agree with your statement: Portion size in North American markets is ridiculous; Our consumption and exercise levels are way out of whack and that surely does need correcting; But there does appear to be a not insignificant number of people where despite diet, exercise and unimaginable will-power and discipline, there is little if any change in body mass. Some people despite eating ridiculous amounts of junk food their entire lives and doing little if any discernible exercise have a disproportionately low body weight; and some people despite eating little store all the fat their bodies can muster. I watch enough of this around me every day to know that these people aren't lying - if they could flip a switch to make their lives easier, why wouldn't/shouldn't they? I would. I know that even having the tine/discipline to lose 10-20lbs is hard. Imagine those that have 100+lbs to get into a healthy range. That's a struggle many of us will hopefully never have to comprehend.