Infants don't sling back quarter pounders or movie popcorn. So why the 70% increase in infant Obesity. The article focuses on a possible culprit: obesogens.
Obesogens are environmental chemicals that can change undecided cells in newborns to become fat cells. This works out to be a double whammy in that more fat cells boost your fat absorption and release a hormone to tell you that you're hungry. The result is that you have to work harder at keeping fit and generally just go hungrier.
I always love science and statistics. In many ways I feel like humans are too fallible seeing patterns where there are none and succumbing to conformational bias in choosing which anecdotal evidences to hear.