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  • Over time fluctuation...

Over time fluctuation in blood lipid levels tied to increased risk of dementia

Written By : Dr. Kamal Kant Kohli Published On 2023-07-11T10:30:54+05:30  |  Updated On 11 July 2023 11:48 AM IST
Over time fluctuation in blood lipid levels tied to increased risk of dementia
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USA: The elderly with fluctuating cholesterol and triglyceride levels may be at a greater risk of Alzheimer's disease and Alzheimer's disease-related dementias (AD/ADRDs) compared to people having steady levels, a recent study has found.

The study, published in Neurology, the American Academy of Neurology medical journal, found a link but does not prove that fluctuating levels of cholesterol and triglycerides cause dementia. Researchers did not find a link between variations in LDL and HDL and an increased risk of dementia.

“Prevention strategies for Alzheimer’s and related dementias are urgently needed,” said study author Suzette J. Bielinski, PhD, of the Mayo Clinic in Rochester, Minnesota. “Routine screenings for cholesterol and triglyceride levels are commonly done as part of standard medical care. Fluctuations in these results over time could potentially help us identify who is at greater risk for dementia, help us understand mechanisms for the development of dementia and ultimately determine whether levelling out these fluctuations could play a role in reducing dementia risk.”

Researchers used healthcare data to identify 11,571 people aged 60 or older who did not have a prior diagnosis of Alzheimer’s disease or dementia. Researchers looked at participants’ measurements of total cholesterol, triglycerides, low-density lipoprotein cholesterol (LDL) and high-density lipoprotein cholesterol (HDL) on at least three different days in the five years before the start of the study.

Then researchers divided participants into five equal groups based on how much the measurements fluctuated. The lowest group had the least variation over time, and the highest group had the most.

Participants were followed for an average of 13 years. During that time, 2,473 people developed Alzheimer’s disease or another form of dementia.

After adjusting for variables that could affect risk of dementia including sex, race, education and lipid-lowering treatments, researchers found for total cholesterol, participants in the highest group had a 19% increased risk of dementia compared to those in the lowest group. Of the 2,311 people in the highest group, 515 developed dementia compared to 483 of the 2,311 people in the lowest group. For triglycerides, those in highest group had a 23% increased risk.

“It remains unclear why and how fluctuating levels of cholesterol and triglycerides are related to the risk of Alzheimer’s disease,” said Bielinski. “Further studies looking at the changes over time for this relationship are needed in order to confirm our results and potentially consider preventative strategies.”

A limitation of the study was researchers looked at Alzheimer’s disease and related dementias as a whole and did not differentiate between the types of dementia.

Reference:

Ethan D. Moser, Sheila M. Manemann, Nicholas B. Larson, Jennifer L. St. Sauver, Paul Y. Takahashi, Michelle M. Mielke, Walter A. Rocca, Janet E. Olson, Véronique L. Roger, Alan T. Remaley, Paul A. Decker, Jill M. Killian, Suzette J. Bielinski, Neurology Jul 2023, 10.1212/WNL.0000000000207595; DOI: 10.1212/WNL.0000000000207595.

NeurologycholesteroldementiatriglyceridesAmerican Academy of NeurologyAlzheimer’s disease
Source : Neurology
Dr. Kamal Kant Kohli
Dr. Kamal Kant Kohli

Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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