High-density lipoprotein, or HDL, is what's considered "good" cholesterol. That's because medical experts feel HDL carries cholesterol away from the arteries and back to the liver, where cholesterol is then passed from the body. In addition, some experts also feel HDL removes excess cholesterol from arterial plaque, slowing its buildup as a result. And though cholesterol is commonly, and falsely, considered a dirty word, low levels of HDL actually increase a person's risk of heart disease. A simple blood test can help men and women learn their HDL and LDL levels.
A study reveals that high levels of bad cholesterol are associated with mild cognitive impairment (MCI), which covers language disorders, memory loss, and can even influence the mood, in people more than 50 years old that may precede Alzheimer’s and dementia.
This was demonstrated by a study conducted at Medical University of South Carolina and other schools.
Journal of the American Medical Association