Early dosage of statins could cut dementia risk by 15%: Danish study

A recent Danish study suggests that taking statins soon after discovering type 2 diabetes may lower the risk of dementia by around 15% over a decade. This finding comes from a large-scale analysis involving over 132,000 individuals with type 2 diabetes. The research, published in The Lancet Regional Health - Europe and discussed at the European Society of Cardiology Congress 2026, did not prove that statins prevent dementia, but it does provide evidence of a possible link.

Researchers examined data from 132,585 Danish patients diagnosed with type 2 diabetes between 2006 and 2019. Participants were categorized based on when they started taking statins - some started within five years of their diagnosis, others began within a year, and the rest began later. Over a period of approximately seven years, about 3,592 people in the group developed dementia.

The study found that those who started statins within the first year after their diabetes diagnosis had a slightly lower risk of developing dementia (3.3%) compared to those who began taking the medication later (3.5%). Early statin use translated to a 15% reduction in dementia risk relative to those who didn't start statins at all, while those who started later saw a 10% reduction. The researchers noted that both men and women appeared to benefit equally from early statin use.

While statins are commonly prescribed to manage heart health by lowering LDL ("bad") cholesterol and reducing the risk of heart attacks and strokes, this study suggests they may also have benefits for brain health. Diabetes itself increases the risk of cognitive decline, and poor blood flow in blood vessels could contribute to dementia. By lowering LDL cholesterol, statins might help protect the delicate blood vessels in the brain.

However, the study does not definitively prove that statins prevent dementia. It is an observational study, meaning it can identify patterns and associations but cannot establish a direct cause-and-effect relationship. Further research, such as randomized clinical trials, is needed to confirm these findings.

In summary, while the evidence from this Danish study is promising, it should not be considered conclusive proof that statins prevent dementia. People with type 2 diabetes should continue to follow their healthcare provider's recommendations for managing their condition, which often includes taking statins for heart health. Any potential benefits for brain health should be considered as part of a broader strategy to maintain overall health and well-being.