New study links ‘good’ cholesterol with dementia

A study shows that so-called “good cholesterol” may not be as healthy as previously believed. 

The study, published Wednesday in the journal Neurology, claims that high or low levels of high-density lipoprotein, or HDL, could increase dementia risk for older people.

Researchers tracked more than 180,000 California residents through health surveys for about two years starting between 2002 and 2007, then tracked the group using medical records for about nine years on average. The subjects are now an average of 70 years old.

“Previous studies on this topic have been inconclusive and this study is especially informative because of…