It is about a western diet being related to obesity, see the first paragraph for example: > Researchers at Macquarie University have now shown that memory inhi

It is about a western diet being related to obesity, see the first paragraph for example: > Researchers at Macquarie University have now shown that memory inhibition — the useful ability to ‘block out’ memories that are no longer useful, which depends on a brain area called the hippocampus — is linked to dietary excess. The amount we over eat in the US is pretty unique in the world. This research is suggesting that what we eat is creating a feedback loop; our diet inhibits our ability to block out irrelevant memories which means we can't stop thinking about eating, which means we eat more of the food which makes it harder to stop thinking about eating. Of course, if this research is true and our diet is inhibiting our ability to block out irrelevant memories that seems like it will have a lot more implications than just creating a dietary feedback loop. It could be influencing all kinds of mental disorders as well, including depression, anxiety, etc.