Cholesterol is a key component of brain cell membranes, helping to maintain cell shape, regulate ion flow, and facilitate cell-to-cell communication.
Synaptic Function:
It lines the synapses—the points where brain cells communicate—and is vital for synaptic plasticity, which is the ability of these connections to strengthen or weaken.
Insulation:
Cholesterol helps to insulate brain circuits with myelin, a fatty sheath that protects nerve cells.
Hormone Production:
It serves as a precursor for the production of essential steroid hormones like estrogen and testosterone, which play crucial roles in brain health and mood regulation.
Brain-Specific Synthesis:
The brain manufactures nearly all the cholesterol it needs for its functions, meaning it doesn't rely on cholesterol from the body's circulation.

It is the lower cholesterol that is causing old people to have Alzheimer's. And old men no longer have function down there because of lower cholesterol....


Cholesterol is good. And it's not the cholesterol that is causing what they say high levels of cholesterol causes...