Glucose is the brain's primary fuel, but what is the effect of manipulating blood glucose on human memory performance? There is now a large body of evidence suggesting that under certain conditions, increased levels of glucose in the blood can acutely enhance performance in some domains of memory and cognition more generally. Conversely, cognitive impairment has been detected in individuals with disorders that involve glycaemic dysregulation, such as diabetes. This cognitive dysfunction has potential lifestyle implications for individuals living with diabetes.
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