Second-hand smoke causes negative behaviour

2013-12-03 13:36

Children exposed to second-hand smoke are more likely to have learning and behavioural problems.

Of more than 55?000 US children younger than 12 years, 6% lived with a smoker – and those children were more likely to have attention deficit hyperactivity disorder (ADHD) compared to children in smoke-free homes, the study, published in Paediatrics, found.

Even after accounting for a number of possible explanations, such as parents’ income and education levels, second-hand smoke was still tied to a higher risk of behavioural problems, said Hillel Alpert at the Harvard School of Public Health, one of the researchers.

The findings don’t prove a smoke-filled home is to blame, because there are other factors that the study didn’t look at that may also be to blame – but it may give parents yet another reason to keep their homes smoke-free.

Health experts already recommend children be shielded from second-hand smoke for health reasons, since it can increase their risk of respiratory infections, severe asthma and sudden infant death syndrome.

“The key message for parents is to protect their children from exposure to second-hand smoke,” Alpert told Reuters Health.

One other factor to consider is that children exposed to second-hand smoke often had intra-uterine exposure as well, which has been linked to increased risks of learning and behavioural problems.

The results are based on a 2007 national survey of parents of 55 358 children younger than 12. The finding that 6% lived with a smoker translates into nearly 5 million US children exposed to second-hand smoke at home, according to the research team.

About 20% of parents in smoking households said their child had at least one type of conduct disorder, versus less than 9% of parents in non-smoking homes.

The researchers said it’s unclear exactly how second-hand smoke would contribute to learning and behavioural problems. Some research has speculated the smoke may affect certain chemicals in children’s developing brains.

A second study in Paediatrics suggested children’s reactions to their parents’ second-hand smoke may also play some role in their own likelihood of taking up the habit.

Among 165 low-income pre-teens from smoking households, those who thought second-hand smoke was “unpleasant or gross” were 78% less likely than other children to be at a high risk of smoking.

Alpert said whatever the reasons for the current findings, they underscore the need for children to be kept away from smoke.

Join the conversation!

24.com encourages commentary submitted via MyNews24. Contributions of 200 words or more will be considered for publication.

We reserve editorial discretion to decide what will be published.
Read our comments policy for guidelines on contributions.

24.com publishes all comments posted on articles provided that they adhere to our Comments Policy. Should you wish to report a comment for editorial review, please do so by clicking the 'Report Comment' button to the right of each comment.

Comment on this story
0 comments
Comments have been closed for this article.

Inside News24

 
/News

Book flights

Compare, Book, Fly

Traffic Alerts
There are new stories on the homepage. Click here to see them.
 
English
Afrikaans
isiZulu

Hello 

Create Profile

Creating your profile will enable you to submit photos and stories to get published on News24.


Please provide a username for your profile page:

This username must be unique, cannot be edited and will be used in the URL to your profile page across the entire 24.com network.

Settings

Location Settings

News24 allows you to edit the display of certain components based on a location. If you wish to personalise the page based on your preferences, please select a location for each component and click "Submit" in order for the changes to take affect.




Facebook Sign-In

Hi News addict,

Join the News24 Community to be involved in breaking the news.

Log in with Facebook to comment and personalise news, weather and listings.