Journal
NEUROSCIENCE AND BIOBEHAVIORAL REVIEWS
Volume 127, Issue -, Pages 795-807Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.neubiorev.2021.05.024
Keywords
Memory; Eating behavior; Mnemonic control of eating; Episodic memory; Obesity; Evolution
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Funding
- National Science Foundation Graduate Research Fellowship
- American Psychological Association of Grad-uate Students Psychological Science Research Grant
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Research on memory and eating behavior reveals their close connection, influenced by similar neuroendocrine signals and dependent on hippocampal functions. The cyclic relationship between obesity and memory impairment highlights the importance of studying how memory of eating influences future consumption.
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 shown how memory of recent eating modulates future consumption. In humans, obesity is associated with impaired memory performance, and in rodents, dietary-induced obesity causes rapid decrements to memory. Lesions to the hippocampus 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, 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.
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