Healthy Cholesterol Levels May Prevent Alzheimer's, Study

A good balance of bad and good cholesterol levels may be the key to preventing Alzheimer's disease, researchers claim.

Researchers at University of California, Davis have discovered that this healthy mix of good and bad cholesterols in the bloodstream keeps the amyloid plaque deposition in the brain, that is a hallmark of Alzheimer's disease, at lower levels.

Risk Factors for Alzheimers Disease
Cognitively normal adults exhibiting atrophy of their temporal lobe or damage to blood vessels in the brain are more likely to develop Alzheimer’s disease.

"Unhealthy patterns of cholesterol could be directly causing the higher levels of amyloid known to contribute to Alzheimer's, in the same way that such patterns promote heart disease," said Bruce Reed, lead study author and associate director of the UC Davis Alzheimer's Disease Centre.

The study, appeared in the journal JAMA Neurology, conducted on 74 diverse male and female individuals who are 70 years of age or above has for the first time established the links between cholesterol levels in the blood and amyloid deposition in the brain.

"If you have an LDL above 100 or an HDL that is less than 40, even if you're taking a statin drug, you want to make sure that you are getting those numbers into alignment," said Charles DeCarli, director of the Alzheimer's Disease Centre.

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"You have to get the HDL up and the LDL down," he added.

These findings are expected to have major impact on future prevention and treatment of Alzheimer's disease.

Age-Dependent Alterations Not Specific For Alzheimer's Disease
The oscillations in the microcirculation exhibit an age-dependent pattern, which is more pronounced in the forehead than in the forearm.

"This study provides a reason to certainly continue cholesterol treatment in people who are developing memory loss regardless of concerns regarding their cardiovascular health," Reed, a professor in the UC Davis Department of Neurology said.

The findings also suggested a method of lowering amyloid levels in middle-aged people and prevent Alzheimer's from becoming severe.

Source-IANS