What are the early signs and symptoms of dementia and can it be prevented?

Clinical answer with reasoning, red flags and references. Clinically reviewed by Dr Kola Tytler MBBS CertHE MBA MRCGP.

Posted: 9 August 2025Updated: 9 August 2025 Clinically Reviewed
Dr Kola Tytler MBBS CertHE MBA MRCGPClinical Lead • iatroX

Early Signs and Symptoms of Dementia

Dementia can manifest with a range of symptoms, often varying in their presentation and severity from person to person . Common early signs can include poor short-term memory, disorientation, and a lack of insight and judgement . Disorders of attention can also lead to impairment .

Prevention of Dementia Development

While there is no guaranteed way to prevent dementia, certain lifestyle modifications and management of risk factors may help delay or reduce its onset . It is recommended to treat identified, modifiable risk factors for cognitive impairment, such as excess alcohol consumption, diabetes mellitus, and cardiovascular risk factors . Engaging in healthy brain activities, such as regular exercise, word games, and socialization, is also suggested .

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