Passive smoking 'link to dementia'

11 January 2013

Passive smokers are at a greater risk of developing severe dementia, a major new international study has revealed.

Researchers working in the UK, US and China say that they now have evidence that suggests a link to inhaling in other people's smoke and the syndrome that leads to the decline of the brain.

It is already known that people exposed to second-hand smoke – also known as environmental tobacco smoke (ETS) are at a greater risk of developing cardiovascular and respiratory diseases.

"Passive smoking should be considered an important risk factor for severe dementia syndromes, as this study in China shows," commented Dr Ruoling Chen, senior lecturer of public health at King's College London.

"Avoiding exposure to ETS may reduce the risk of severe dementia syndromes."

The World Health Organization has stated that over 80 per cent of the one billion smokers across the world live in low and middle income countries, where smoke-related illnesses are at their worst.

There are many types of dementia, including Alzheimer's disease, the most common syndrome of all.

Posted by Jeanette Royston

Health News is provided by Adfero in collaboration with Spire Healthcare. Please note that all copy above is ©Adfero Ltd. and does not reflect views or opinions of Spire Healthcare unless explicitly stated. Additional comments on the page from individual Spire consultants do not necessarily reflect the views or opinions of other consultants or Spire Healthcare.

Find a treatment, test or scan available at:


Find a consultant

Use one or more of the options below to search for a consultant and link through to view their Spire profile.


Let us help you

fill out this form and we will get back to you:

Please select a hospital

We can call you

Please enter your details below and we will call you back.

What is the aim of your enquiry?

Please select a hospital

If we are unable to reach you by phone, please include your email address so that we can get in touch...



© Spire Healthcare Group plc (2016)