A saturated fat-rich diet can indirectly lead to memory loss. High cholesterol levels lead to fatty plaques that deposit themselves on the inner walls of arteries and slow down blood flow in the brain. If this slowing of flow occurs in a small artery (as is common), blood clots gradually form and cause a ministroke, and depending on which part of the brain is damaged, cognitive deficits can occur. If hippocampal or specific frontal lobe nerve cells are affected, memory loss will be the result. The best time to focus on dietary preventive techniques is before these lesions develop, because after a ministroke, the dead nerve cells cannot be regenerated. Another reason for cutting back on saturated fats is that they increase the number of free radicals, which are toxic to most brain cells and can produce memory loss.
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