Portion sizes have increased hugely over the last forty years. Lisa Young and Marion Nestle published a great study in American Journal of Public Health in 2002 showing that cookies were twice the size they had been thirty years prior, and that a portion of pasta now had roughly twice the number of calories compared to its 1970’s counterpart. Some things hadn’t changed much, but overall, food manufacturers are clearly trying to get us to eat more and more of their products. And why wouldn’t they? They want to make money. There are two responses to this rising pressure to eat more. Marion Nestle is valiantly fighting the good fight and…