What should you know about smoking and dementia?

The brain relies on healthy blood vessels for oxygen and nutrients. Smoke exposure can injure vessels and contribute to problems such as high blood pressure and stroke, which may affect thinking and memory. Dementia has many possible contributors, so smoking is one modifiable risk factor rather than a diagnosis or a complete explanation for memory problems.

Forgetfulness can also result from poor sleep, stress, depression, medication effects, infection, or other medical conditions. Changes in planning, language, orientation, or managing familiar tasks are worth discussing, especially when they interfere with everyday life.

Stopping smoking supports circulation at any age. A GP or pharmacist can help plan nicotine replacement or another method, taking account of other medicines and health conditions. Also work on the factors your clinician identifies, such as blood pressure, diabetes, hearing, sleep, mood, and physical activity.

Keep a simple record of changes in memory or daily function, including when they began and examples such as missed appointments or difficulty handling money. Bring a trusted person to an appointment if the individual agrees; another perspective can clarify what has changed.

Call emergency services for sudden facial weakness, arm weakness, speech difficulty, severe confusion, or a sudden change in vision, because these can signal a stroke. Seek urgent care for sudden severe confusion, fever with a major mental change, or a new inability to manage basic safety.

Arrange a GP consultation for gradually worsening memory, changes in behaviour, repeated getting lost, or loss of independence. A clinician may review medicines and arrange a mental health assessment or other checks when symptoms suggest a treatable contributor.

Ask whether the changes fit memory problems or another condition, which medicines and vascular risks should be reviewed, what stop-smoking support is suitable, and how family or carers can help with assessment and safety.