For the majority of people, genes are only one of many factors that may increase their risk of getting dementia. Other factors that affect our dementia risk include our age, lifestyle and environment.

While we cannot change our age or genes, research has suggested that almost half of dementia cases are linked to factors we have some control over. The diagram below shows the different factors that affect our dementia risk throughout our life.

We have more control over some of these factors than others. For example, we often can’t change how much air pollution we are exposed to. But we can do more physical activity and watch what we eat.

Genes and dementia

The booklet gives an overview of what genes are and how they are involved in the different diseases that cause dementia, along with information on genetic testing and current research.

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Order health information

Alzheimer’s Research UK has a wide range of information about dementia. Order booklets or download them from our online form.

Dementia Research Infoline

Do you have questions about dementia risk? Or are you keen to get involved in research studies?

Contact the Dementia Research Infoline

9am-5pm, Monday to Friday

0300 111 5 111

infoline@alzheimersresearchuk.org

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This information was updated in November 2024 and is due for review in November 2026. It does not replace any advice that doctors, pharmacists, or nurses may give you. Please contact us if you would like a version with references.

This information is produced with support from The Perfume Shop who had no input into the content.

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