Key risk factors
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Nine potentially modifiable risk factors were identified by the Lancet Commission in 2017
- Less education
- Hypertension
- Hearing impairment
- Smoking
- Obesity
- Depression
- Physical inactivity
- Diabetes
- Low social contact
Their most recent report, published in 2020 added three more risk factors for dementia with newer and convincing evidence (Livingston et al., 2020)
- Excessive alcohol consumption
- Traumatic brain injury
- Air pollution
Together these 12 modifiable risk factors account for around 40% of dementias around the world, which could, in theory be prevented or delayed (Livingston et al., 2020).