Dementia prevention breakthrough? metformin and lifestyle combo tested in major trial
NCT ID NCT05109169
First seen Jul 10, 2026 · Last updated Jul 10, 2026
Summary
This trial tests whether combining a diabetes drug (metformin) with an intensive lifestyle program—including diet, exercise, brain training, and health monitoring—can prevent cognitive decline in older adults at risk for dementia. Six hundred participants aged 60-79 with risk factors but no dementia will be randomly assigned to either the combined intervention or standard health advice. The study lasts two years and measures changes in memory, thinking speed, and daily function.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- metformin
- What this could lead to
- If successful, this could point toward a practical, drug-plus-lifestyle strategy to reduce dementia risk in older adults.
- What could go wrong
- This is a Phase 2 trial, so it is still early. The combination may not prove more effective than lifestyle advice alone, and metformin can cause gastrointestinal side effects.
This is an AI summary of the original study and may miss details. Read our disclaimer.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Locations
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Ageing Epidemiology Research Unit, Imperial College London
London, W6 8RP, United Kingdom
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Finnish Institute of Health and Welfare - THL
Helsinki, FI-00271, Finland
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Karolinska Institutet
Solna, 171 64, Sweden
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