The short answer is YES, but with some finer points.
A recent study found that fluctuating total cholesterol levels might increase dementia risk by 19%! Moreover, it turned out that triglycerides here play even a more significant role. Their up-and-downs elevate the risk of dementia by 23%.
However, there wasn’t any link found between unstable LDL (“bad” cholesterol) or HDL (“good” cholesterol) and a dementia risk.
Researchers can’t explain these results and need more studies to figure this out.
Curious? HERE is the source