Learning have long been implicated in influencing eating behavior; memory of recent eating modulates future food consumption; overweight and obesity is associated with impaired memory performance

Seitz, Benjamin M., A. J. Tomiyama, and Aaron Blaisdell. 2020. “Eating Behavior as a New Frontier in Memory Research.” PsyArXiv. September 11. doi:10.31234/osf.io/ry4nv

Abstract: The study of memory is commonly associated with neuroscience, aging, education, and eyewitness testimony. Here we discuss how eating behavior is also heavily intertwined—and yet considerably understudied in its relation to memory processes. Both are influenced by similar neuroendocrine signals (e.g., leptin and ghrelin) and are dependent on hippocampal functions. While learning processes have long been implicated in influencing eating behavior, recent research has shed light on how memory of recent eating modulates future food consumption. In humans, overweight and obesity is associated with impaired memory performance, and studies in rodents (and to a lesser extent humans) show that dietary-induced obesity causes rapid decrements to memory. Lesions to the hippocampus not only disrupt memory, but also induce obesity, highlighting a cyclic relationship between obesity and memory impairment. Enhancing memory of eating has been shown to reduce future eating and yet, very little is known about what influences memory of eating or how memory of eating differs from memory for other behaviors. We discuss recent advancements in these areas and highlight fruitful research pursuits afforded by combining the study of memory with the study of eating behavior.