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Both high and low HDL cholesterol tied to increased risk of dementia

Having either high or low levels of high-density lipoprotein (HDL) cholesterol, or “good” cholesterol, is tied to a small increased risk of dementia in older adults, according to a study published in the October 4, 2023, online issue of Neurology. This study does not prove that high or low levels of HDL cholesterol cause dementia; it only shows an association.