The brain's structure requires an abundance of lipid and cholesterol to support its function.

“what is it about these cells in the brain that structurally requires such an abundance of lipid and cholesterol that's a fundamentally important question and it actually begs to ans ask perhaps a slightly different question how is the brain functionally different than a myocyte and one way to look at this question is to understand that the brain operates by firing so you're looking at perhaps an electric system where you have wires connected to each other and these wires have to fire constantly”