Statins linked to 15% lower dementia risk in Danish diabetes study
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A 15-year Danish study of 132,585 people with type 2 diabetes found that starting statins earlier was associated with a 15% lower 10-year risk of dementia. The findings were presented at the European Society of Cardiology congress in Munich and published in The Lancet Regional Health – Europe. The observational study shows an association but does not prove statins cause the reduction.
Key Facts
- The study followed 132,585 Danish residents with type 2 diabetes from 2006 to 2021.
- Dementia developed in 2.7% of participants during the follow-up period.
- Earlier statin initiation was associated with a 15% lower relative risk of dementia over 10 years, while later initiation showed a 10% reduction.
- Results were presented at the European Society of Cardiology congress in Munich and published in The Lancet Regional Health – Europe.
- The number of people with dementia worldwide is projected to approach 153 million by 2050.
Study Design
Researchers analyzed data from 132,585 Danish residents with type 2 diabetes, followed from 2006 to 2021. During the follow-up, dementia developed in 2.7% of participants. The study was observational and identified an association between statin use and lower dementia risk, not a causal relationship.
Risk Reduction Findings
Participants who started statins earlier had a 15% lower relative risk of developing dementia within 10 years compared with those who did not start the therapy. Later statin initiation was associated with a 10% risk reduction. Similar results were observed among men and women.
Context and Implications
Statins lower low-density lipoprotein cholesterol, and researchers suggest this may protect not only the heart and blood vessels but also the brain. High cholesterol contributes to atherosclerosis and impaired cerebral blood supply, which may increase dementia risk. Previous research indicates that addressing modifiable risk factors over a lifetime could potentially prevent or delay up to 45% of dementia cases.
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Statins linked to 15% lower dementia risk in Danish diabetes study
