Dementia’s next best defense? More evidence for the humble statin
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Our findings underscore the neuroprotective potential of statins in dementia prevention. Despite the inherent limitations of observational studies, the large dataset and detailed subgroup analyses enhance the reliability of our results.
—Authors, Alzheimer's & Dementia
They reduce vascular inflammation, which lowers your risk of small vessel disease—a major cause of vascular dementia. They stabilize plaques in arteries, improving blood flow to the brain.
—Arun L. Naik, MCh, neurosurgeon
A new research study provides additional evidence that taking statins could aid dementia prevention.[]
In a systematic review and meta‐analysis encompassing over 7 million patients from 55 observational studies, the researchers found that statin use significantly reduced the risks of dementia, Alzheimer’s disease, and vascular dementia compared to nonusers.
Specifically, rosuvastatin, a statin used to treat and lower cholesterol and triglycerides, had the “most pronounced protective effect for all‐cause dementia among specific statins.”
“Our findings underscore the neuroprotective potential of statins in dementia prevention,” the researchers wrote. “Despite the inherent limitations of observational studies, the large dataset and detailed subgroup analyses enhance the reliability of our results.”[]
Related: New insights on statins: For some, they can reduce risk of dementia; for others, they can be replaced with better, cheaper drugsHow statins may prevent dementia
According to neurosurgeon Arun L. Naik, MCh, there are a few ways statins may work to prevent dementia.
"They reduce vascular inflammation, which lowers your risk of small vessel disease—a major cause of vascular dementia," he said in an Instagram Reel. "They stabilize plaques in arteries, improving blood flow to the brain."
Some statins, like simvastatin and atorvastatin, can cross the brain barrier, Dr. Naik explained. Once inside, they may reduce brain inflammation and oxidative stress, which are both linked to Alzheimer’s.
Heart and brain health are closely linked
The research adds to information about the connection between heart and brain health.
In 2024, the American Heart Association (AHA) released a statement about how heart failure, atrial fibrillation, and coronary heart disease are linked to cognitive impairment and increased risk of dementia.[]
The AHA suggested that addressing cardiovascular health earlier in life may help preserve memory and thinking skills later in life.
While it is too soon to prescribe statins for dementia prevention, the researchers say that future randomized clinical trials are needed to “confirm these findings and enlighten clinical guidelines.”[]
Related: Researchers may have found a new cause of dementia