Next the End of Overeating explores why the syndrome Dr. Kessler calls conditioned hypereating is an emerging threat in our modern world. For centuries, homeostasis kept our consumption of food as a population more or less in balance. That balance has now been overturned. In large part that’s because our brains are actually being rewired. Dr. Kessler notes this phenomenon in his book.
I began to develop an overarching theory about eating for reward: Chronic exposure to highly palatable foods changes our brains, conditioning us to seek continued stimulation. Over time, a powerful drive for a combination of sugar, fat, and salt competes with our conscious capacity to say no.
So, how do we become trapped in this cycle of conditioned hypereating? When the chemical reward from eating a hyperpalatable food has made us feel better in the past, we become conditioned to associate that feeling with the food. And it tends to work. We crave that Butterfinger because we have felt good when we’ve eaten them in the past. So when we obtain one and take that first bite, we tend to feel that same sensation.
In many ways, conditioned hypereating is like many afflictions with both a genetic and environmental component. That’s similar to celiac disease. Some people never suffer from conditioned hypereating, just like a third of the population lacks the genes necessary for celiac disease. But even among those with the genetic predisposition for hyperconditioned eating, like those with the genes for celiac disease, not everyone will manifest the condition. For the rest of us, again like celiac disease, conditioned hypereating could be triggered at any time.
However, it’s certainly clear that a significant portion of the global population is susceptible and as we import the highly processed and hyperpalatable American diet into other parts of the world, the obesity epidemic begins to take root in those countries as well.