Your gut may help your brain decide what to remember
New research suggests that the gut communicates with the brain via the vagus nerve to influence memory formation, particularly regarding food. Experiments with rats show that nutrient-rich food triggers acetylcholine release, which is essential for memory, while low-calorie alternatives do not.
Why it matters
Understanding the gut-brain axis could lead to new insights into how diet impacts cognitive function and memory retention.
The taste of a madeleine famously sent French writer Marcel Proust back into vivid memories of childhood. New research suggests that this kind of recollection may involve more than the brain alone. Signals from the digestive system may also help determine which food-related experiences become memories.
The study, led by Scott Kanoski, professor of biological sciences at the USC Dornsife College of Letters, Arts and Sciences, indicates that the gut may contribute to memory formation, particularly when an experience involves finding and consuming food.
Published in Nature Communications , the research examined the vagus nerve, one of the body's main communication routes between the digestive system and the brain. The nerve is already known to influence digestion, appetite, and feelings of fullness. The new findings suggest that it may also carry information that helps the brain store memories.
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