How levels of 'good' cholesterol may increase dementia risk

A new study published in Neurology challenges the conventional understanding of HDL cholesterol, often termed as the "good" cholesterol. It suggests that both high and low levels of HDL cholesterol might increase the risk of dementia in older adults. The research emphasizes the importance of maintaining HDL cholesterol within a specific range for overall health.

The study involved over 184,000 adults with an average age of 70 and spanned about 13 years. During this period, over 25,000 participants developed dementia. Those with HDL cholesterol levels too high or too low were found to be more likely to develop dementia compared to those within the recommended range.

Experts have long recognized that not all HDL cholesterol functions the same. Its role and storage location in the body, whether in the brain or elsewhere, can influence its effects. Further research is needed to understand HDL cholesterol's complexity and its potential link to dementia risk.