WHO updates dementia prevention guidelines, highlighting modifiable risk factors and policy needs
Consensus Summary
The World Health Organization (WHO) released updated dementia prevention guidelines for the first time in seven years, estimating that up to 45 per cent of dementia cases could be prevented or delayed by addressing modifiable risk factors such as alcohol consumption, physical inactivity, diabetes, and high blood pressure. The guidelines emphasize the need for societal and government-level interventions, as individual actions alone cannot significantly reduce dementia prevalence. Key recommendations include reducing exposure to air pollution, adopting a healthy diet rich in leafy greens, berries, nuts, and olive oil, engaging in cognitive stimulation, and combating midlife obesity. The guidelines also strongly advise against vitamin and mineral supplements for dementia prevention and include a conditional recommendation against menopausal hormone therapy (MHT) for postmenopausal women aged 65 and older, though evidence remains insufficient for women with premature ovarian insufficiency or early menopause. Globally, over 57 million people live with dementia, with nearly 10 million new cases annually, and Alzheimer’s disease accounts for 60 to 70 per cent of cases. In Australia, dementia is the leading cause of death, surpassing cardiovascular disease, with an estimated 446,500 Australians affected in 2026. The WHO stressed that systemic solutions, such as improving access to healthy food and exercise, are essential to achieving meaningful reductions in dementia risk.
✓ Verified by 2+ sources
Key details reported by multiple sources:
- Up to 45 per cent of dementia risk could be prevented or delayed by eliminating modifiable risk factors including alcohol, not exercising, diabetes, and high blood pressure
- The WHO’s expert dementia panel updated guidelines for the first time in seven years
- More than 57 million people live with dementia worldwide, with nearly 10 million new diagnoses annually
- Alzheimer’s disease accounts for 60 to 70 per cent of dementia cases globally
- An estimated 446,500 Australians will have dementia in 2026, according to the Australian Institute of Health and Welfare
- The WHO guidelines strongly recommend against vitamin and mineral supplements (vitamins B and E, omega-3 fatty acids, multivitamins) for reducing dementia risk
- The guidelines include a conditional recommendation against menopausal hormone therapy (MHT) for reducing dementia risk in postmenopausal women aged 65 years and older
- There is insufficient evidence for or against MHT for women with premature ovarian insufficiency, early menopause, or perimenopause to reduce dementia risk
- The WHO does not recommend initiating MHT for primary prevention of Alzheimer’s dementia in naturally menopausal women
- The guidelines recommend interventions to combat midlife obesity and overweight, hearing aids for hearing loss, and social engagement to reduce loneliness
- Reducing exposure to household and ambient air pollution, including PM2.5 particulates from vehicle emissions and fireplace smoke, is a key recommendation
- Dementia, including Alzheimer’s disease, is Australia’s biggest killer, surpassing cardiovascular disease
- Scientia Professor Kaarin Anstey, director of the UNSW Ageing Futures Institute, is the only Australian on the WHO’s dementia panel
- The WHO guidelines emphasize that individual actions alone cannot significantly reduce dementia prevalence without government intervention
Points of Difference
Details reported by only one source:
- The WHO director-general Dr Tedros Adhanom Ghebreyesus stated: 'We know more today than ever before about what drives dementia risk, and these guidelines translate that knowledge into action.'
- The WHO guidelines found insufficient evidence to recommend interventions for depression, sleep, stroke, traumatic brain injury, vision impairment, and HIV for reducing dementia risk.
Contradictions
Conflicting information between sources:
- No contradictions found between the two sources.
Source Articles
Almost 50 per cent of dementia cases could be prevented. This new advice tells us how
The World Health Organisation has a suite of new recommendations to cut dementia risk.
Almost 50 per cent of dementia cases could be prevented. This new advice tells us how
The World Health Organisation has a suite of new recommendations to cut dementia risk.