Navigation Links
Passive smoking increases risk of severe dementia, according to study in China
Date:1/9/2013

Passive smoking, also known as 'second-hand' smoke or environmental tobacco smoke (ETS), is known to cause serious cardiovascular and respiratory diseases, including coronary heart disease and lung cancer. However, until now it has been uncertain whether ETS increases the risk of dementia, mainly due to lack of research. Previous studies have shown an association between ETS and cognitive impairment, but this is the first to find a significant link with dementia syndromes.

The study, published in Occupational and Environmental Medicine, is a collaboration between scientists at King's College London and Anhui Medical University, China, along with colleagues in the UK and USA.

According to the World Health Organization (WHO), nearly 80 percent of the more than one billion smokers worldwide live in low- and middle-income countries, where the burden of tobacco-related illness and death is heaviest; but only 11 percent of the world's population are protected by comprehensive smoke-free laws.

China is the largest consumer of tobacco in the world, with 350 million smokers. Since 2006, the Chinese government has actively promoted the introduction of smoke-free environments in hospitals, schools, on public transport and in other public places, but implementation has not been widespread.

Recent data show that the prevalence of passive smoking is still high, with over 50 percent of people exposed to environmental tobacco smoke on a daily basis. China also has the highest number of dementia sufferers in the world, with increasing rates of new cases as the population ages.

Dr Ruoling Chen, senior lecturer in public health from King's College London, and colleagues interviewed 5,921 people aged over 60 in the rural and urban communities of Anhui, Guangdong, Heilongjiang, Shanghai and Shanxi to characterise their levels of ETS exposure, smoking habits and assess levels of dementia syndromes.

They found that 10 percent of the group had severe dementia syndromes. This was significantly related to exposure level and duration of passive smoking. The associations with severe syndromes were found in people who had never smoked and in former and current smokers.

The data from the Anhui cohort, which were collected at baseline in 2001-03 for dementia syndromes and in the follow up in 2007-08 for ETS exposure and dementia, further excluded the possibility that dementia syndromes caused people to be more exposed to environmental tobacco smoke.

Dr Ruoling Chen, also a visiting professor at Anhui Medical University said: 'Passive smoking should be considered an important risk factor for severe dementia syndromes, as this study in China shows. Avoiding exposure to ETS may reduce the risk of severe dementia syndromes.

'China, along with many other countries, now has a significantly ageing population, so dementia has a significant impact not only on the patients but on their families and carers. It's a huge burden on society.'

The findings from this study, together with a second recent study by Chen and colleagues published in Alzheimer's & Dementia on the links between passive smoking and Alzheimer's disease, strengthen the case for public health measures to protect people from exposure to environmental tobacco smoke.

'At present, we know that about 90 percent of the world's population live in countries without smoke-free public areas. More campaigns against tobacco exposure in the general population will help decrease the risk of severe dementia syndromes and reduce the dementia epidemic worldwide.'

He added: 'The increased risk of severe dementia syndromes in those exposed to passive smoking is similar to increased risk of coronary heart disease suggesting that urgent preventive measures should be taken, not just in China but many other countries.'


'/>"/>

Contact: Katherine Barnes
katherine.barnes@kcl.ac.uk
44-207-848-3076
King's College London
Source:Eurekalert

Related medicine news :

1. Passive smoking also affects neurodevelopment in babies
2. Smoking Deadlier For HIV Patients Than Virus Itself: Study
3. HIV patients in care lose more years of life to smoking than to HIV infection
4. Pricey Cigarettes, Strict Schools Help Curb Teen Smoking
5. Stop-Smoking Drug Chantix May Carry Heart Risks, FDA Warns
6. Even Light Smoking Boosts Womens Risk of Sudden Heart Death: Study
7. AddictionFreeCanada.com, At a Recent Press Briefing, Offered Solutions to Dangers Caused by Smoking, Drinking and Gambling.
8. U.S. Task Force Urges Docs to Counsel Kids Against Smoking
9. Drug helps women who stop smoking keep weight off
10. SouthPark Hypnosis Now Offers Smoking Cessation Program with Acupuncture
11. Genes May Influence Effectiveness of Anti-Smoking Policies
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/22/2017)... ... March 23, 2017 , ... Catalent Pharma Solutions, ... biologics and consumer health products, today announced that it had won the ‘Clinical ... at the Suntec Singapore International Exhibition & Convention Centre, Singapore. The award was ...
(Date:3/22/2017)... ... 2017 , ... Old School Labs™, makers of the best-selling Vintage line of ... Ambassador. Theophane, who trained with Floyd Mayweather, made his professional debut in London in ... an impressive number of wins in contests in Britain, Germany and the U.S. ...
(Date:3/22/2017)... ... 22, 2017 , ... Wash Tower Ltd. has released a series of six ... the world's first standalone constant pressure bidet. , The videos in the series titled ... https://www.washtower.com as well as on its social media pages. , Each video stars ...
(Date:3/22/2017)... (PRWEB) , ... March 22, 2017 , ... Drs. Jennifer ... their patient base to accept new patients in need of skilled pediatric dentistry ... India Hook Dental Care offers pediatric patients routine treatments, including cavities, sealants and fluoride ...
(Date:3/22/2017)... ... March 22, 2017 , ... ... lab with extensive therapeutic experience and operational excellence in oncology clinical trials, proudly ... trial for the treatment of non-small cell lung cancer and small cell lung ...
Breaking Medicine News(10 mins):
(Date:3/22/2017)... 22, 2017 FinancialBuzz.com News Commentary ... rapidly due to the significant development and innovation in ... Market Research, the global electrophysiology market was worth $3.42 ... billion by 2022, with a GAGR of 13.4%. Electrophysiology ... diagnose abnormal heartbeats or arrhythmia. The report indicates that ...
(Date:3/22/2017)... GROVE, Minn. , March 22, 2017   Upsher-Smith ... Clomipramine Hydrochloride Capsules* USP, 25 mg, 50 mg and 75 ... (clomipramine hydrochloride) Capsules USP. The clomipramine hydrochloride ... the 12 months ending December 2016, according to IMS Health. ... "Upsher-Smith ...
(Date:3/22/2017)... 22, 2017  As the world,s leading non-profit dedicated ... (LLS) has played a role in most therapies used ... are even helping patients with other cancers and serious ... investment in cutting-edge research – more than $1 billion ... with the record-breaking sum of $4.1 million raised at ...
Breaking Medicine Technology: