By Tom Laskawy
A recent University of Washington study showed Seattle-area shoppers at Whole Foods are much less likely to be obese, on average, than shoppers at the less expensive chain Albertsons.
I shrugged when I read this. From what I can tell, the study didn’t control for income: it’s well established that Whole Foods shoppers have higher incomes, which has always been correlated with low obesity rates. Indeed, some public health experts will tell you that we don’t have an obesity epidemic so much as we have a poverty epidemic.