31 Aug 2026 Punjab Khabarnama Bureau : Statins, widely prescribed to lower cholesterol and protect against heart attacks and strokes, may also be linked to a lower risk of dementia, according to a large long-term study from Denmark.
Researchers found that people with newly diagnosed type 2 diabetes who began statin treatment within a year had a 15% lower relative risk of developing dementia over 10 years compared with those who did not start statins during the first five years after diagnosis. Those who started treatment later had a 10% lower relative risk.
Large Danish Study Examines Statin Timing
The study, published in The Lancet Regional Health – Europe and presented at ESC Congress 2026, analysed nationwide Danish health records involving 132,585 people who had type 2 diabetes and had not previously used statins.
Researchers followed participants for a median of 7.1 years and compared people who started statins within one year of their diabetes diagnosis with those who delayed treatment or did not start it within five years.
During the follow-up period, 3,592 people, or 2.7%, developed dementia.
Early Treatment Showed the Strongest Association
The researchers estimated that the 10-year risk of dementia was:
- 3.9% among those who did not start statins.
- 3.3% among those who started statins within one year.
- 3.5% among those who started treatment between one and five years later.
That translated into a 15% lower relative risk for early statin treatment and a 10% lower relative risk for later treatment compared with no statin initiation.
Why Could Cholesterol Affect Brain Health?
Researchers believe one possible explanation is the connection between vascular health and cognitive health.
High levels of LDL cholesterol can contribute to atherosclerosis, the buildup of fatty deposits inside blood vessels. Over time, vascular disease can affect blood flow to the brain and contribute to conditions associated with cognitive decline.
Lowering LDL cholesterol could therefore potentially reduce some forms of vascular damage that affect the brain. However, the precise mechanisms behind the association remain uncertain.
Diabetes Already Raises Dementia Risk
The study focused specifically on people with type 2 diabetes, a group that already faces an increased risk of cognitive decline and dementia.
This makes cholesterol management particularly important because diabetes can affect blood vessels and is itself a recognised risk factor for dementia.
The researchers suggest that timely management of LDL cholesterol may therefore offer benefits extending beyond cardiovascular protection.
The Finding Does Not Prove Statins Prevent Dementia
One of the most important limitations is that this was an observational study, rather than a randomised clinical trial specifically designed to test whether statins prevent dementia.
Although the researchers used statistical methods designed to emulate some features of a randomised trial, differences between people who take statins and those who do not can still influence the results.
The study authors therefore say randomised trial evidence is still needed to confirm whether statins themselves directly reduce dementia risk.