A high-fat diet also appears to prompt normally bustling immune cells in our brain to become sedentary and start consuming the connections between our neurons, a new study has found.
However, going back on a low-fat diet for just two months may reverse this trend of shrinking cognitive ability as weight begins to normalise, researchers said.
"Microglia eating synapses is contributing to synapse loss and cognitive impairment in obesity," said corresponding author Alexis M. Stranahan from Medical College of Georgia.
"On the one hand, that is very scary, but it is also reversible, meaning that if you go back on a low-fat diet that does not even completely wipe out the adiposity, you can completely reverse these cellular processes in the brain and maintain cognition," he explained.
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