I second stupid. And feel all actions and beliefs are derived from the ever increasing stupidity. Especially when you look at fat consequences on brain function. So they might start off moderate to even intelligent, begin to feed, and the IQ boulder slides down the mountain.  This stupidity results in laziness, as their body is completely out of sorts and they can't figure out why so much physical activity is beyond them, nor try to understand why others participate in physical activity. The decreased brain function leads to needing pleasure, which is positively associated with food, causing the cycle to repeat so the stupidity and damage to the brain also causes obsessive eating, lying, and a complete disconnect from reality and natural laws.