There are several potential mechanisms underpinning this relationship.
Previous research has suggested mechanisms potentially linking high fat diets to the cognitive deficit is insulin resistance.
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Saturated fats, alongside other trans-fatty acids, can also contribute to a breakdown of plasticity in the brain when consumed.
Doctor Ilona Dekkers, from the Leiden University Medical Centre in the Netherlands, said in 2019: “Having higher levels of fat distributed over the body is associated with smaller volumes of the important structure of the brain, including grey matter structures that are located in the centre of the brain.”
Source: Daily Express