Independent associations of high-density lipoprotein cholesterol and triglyceride levels with Alzheimer's disease and related dementias.

Summary: You have likely heard that high cholesterol is bad for your heart, but the story is different when it comes to your brain. In a massive study of over 177,000 people, researchers discovered that low levels of triglycerides and "good" cholesterol (HDL) are actually linked to a higher risk of Alzheimer's disease and dementia. Surprisingly, having higher triglyceride levels appeared to protect the brain. This suggests that while we often try to lower lipid levels for heart health, levels that are too low might pose a danger to cognitive health in later life.