A new study published in the journal Neuron reveals that high-fat, junk food diets can disrupt brain function in just a matter of days. The research shows that fatty diets impair memory by rewiring a specific group of brain cells in the hippocampus, the brain's memory hub.

This study provides a rare window into how diet affects brain health at a cellular level, particularly the role of nutrition in memory formation and cognitive function. Researchers focused on CCK interneurons, a group of brain cells in the hippocampus, which were found to become abnormally active after short-term exposure to a high-fat diet. This overactivity, triggered by reduced glucose availability in the brain, interfered with how memory is processed, well before any weight gain or metabolic conditions such as

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