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| The brain primarily produces its own cholesterol
This means brain cholesterol levels are largely independent of blood cholesterol levels, although they can be indirectly linked.
While high blood cholesterol is linked to cardiovascular disease and stroke, which can damage the brain, there's also evidence suggesting that high brain cholesterol, particularly in the form of cholesteryl esters, may contribute to Alzheimer's disease.
Low brain cholesterol may be linked to reduced cognitive function, particularly in older age, as it can affect myelin formation and neuronal function.
The relationship between cholesterol and cognitive function can vary with age, with some studies suggesting that high cholesterol in midlife may increase dementia risk, while in late life, it may be associated with better cognitive function
The relationship between cholesterol and brain health is complex and influenced by various factors, including genetics, diet, and lifestyle.
I found the above excerpts by googling; "brain cholesterol".
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Curve ball
