How Food Choices Shape Memory, Cognition & Cravings | Dr. Scott Kanoski

This Huberman Lab episode features Dr. Scott Kanoski, Professor of Human and Evolutionary Biology and Neurobiology at the University of Southern California, examining a two-way relationship between nutrition and cognition: food choices can influence memory and learning, while memory can shape eating behavior and cravings. The discussion connects these processes with appetite regulation, GLP-1 signaling and the gut microbiome, treating eating as a brain–body interaction rather than simply a matter of hunger or willpower.

The episode’s explanatory framework centers on connections among the gut, vagus nerve and hippocampus, alongside hormones, acetylcholine and dopamine. Topics include meal memory, stress, interoceptive awareness and the relationship between Western dietary patterns, high sugar intake, processed foods and memory impairments. Artificial and low-calorie sweeteners provide another angle on appetite and satiety; the timestamp specifically identifies preclinical studies, an important distinction from evidence established in humans. Later sections examine microbiome-related topics, including omega-3s, antibiotics and C. diff infection.

GLP-1 drugs and highly processed foods give the conversation its immediate practical context. Kanoski discusses natural GLP-1 production, drug benefits, hunger suppression and “food noise,” alongside nutrient deficiency, weight loss and other effects. The episode also considers individual differences in eating and fasting, exercise, social eating and oxytocin. This scope highlights the need to distinguish appetite suppression, nutritional adequacy and cognitive health rather than assuming they are interchangeable outcomes.

The notes identify several consequential but unresolved questions, including how Western diets relate to dementia and Alzheimer’s disease, how cravings can change, and how highly processed foods intersect with food addiction. They do not provide study citations, effect sizes, dosing guidance or enough detail to evaluate causality or the strength of particular claims. Microdosing GLP-1 drugs and foods intended to enhance the microbiome appear as discussion topics, but the notes do not establish protocols or conclusions about their effectiveness.