Featured Research

from universities, journals, and other organizations

Early Exposure To Tobacco Smoke Causes Asthma And Allergy

Date:
July 24, 2008
Source:
Karolinska Institutet
Summary:
Babies exposed to cigarette smoke before birth or during the first months afterwards run a greater risk of developing asthma and allergy. It is a well known fact that babies are harmed by tobacco smoke in numerous ways, but it has always been difficult to separate the effects of the mother smoking during pregnancy and passive smoking after birth.

Babies exposed to cigarette smoke before birth or during the first months afterwards run a greater risk of developing asthma and allergy. This according to a doctoral thesis from the Swedish medical university Karolinska Institutet.

Related Articles


It is a well known fact that babies are harmed by tobacco smoke in numerous ways, but it has always been difficult to separate the effects of the mother smoking during pregnancy and passive smoking after birth. Dr Eva Lannerö’s doctoral thesis now provides new detailed knowledge on how exposure to tobacco smoke early in life influences the risk of developing allergy and asthma respectively.

The thesis, which is based on the so called BAMSE study, shows that smoking during pregnancy increases the chances of the child developing asthma. The study showed that children of mothers who had smoked while pregnant ran double the risk of developing asthma before the age of four. There was also a clear correlation between the number of cigarettes smoked and the risk of developing asthma.

Her thesis also shows that passive smoking in early childhood increases the risk of allergy. Four-year olds who were exposed to tobacco smoke when they were two months old had IgE antibodies (allergy antibodies) against one or more allergens in the blood more often than their coevals from non-smoking homes. The strongest correlation was observed for antibodies against cat allergens, which were twice as common in these children.

“This is particularly worrying as cat allergens are almost everywhere and are hard to avoid,” says Dr Lannerö. “We can’t say how many, but some of these children will definitely develop chronic asthma.”

Dr Lannerö’s studies also show that smoking during pregnancy is least common amongst the higher educated. Of the 4,000 interviewed mothers, 7 per cent of those with university-level education said that they had smoked while pregnant, as opposed to 20 per cent of those who had opted out of tertiary or secondary education. The data applies to mothers of children born between 1994 and 1996.

The BAMSE study is a project in which 4,100 Swedish children born between 1994 and 1996 have been monitored from birth in order that scientists can learn more about the impact of different environmental factors on the development of childhood allergy.

Thesis: 'Parental smoking, wheezing and sensitisation in early childhood', Eva Lannerö Institute of Environmental Medicine (IMM), Karolinska Institutet http://diss.kib.ki.se/2008/978-91-7357-452-5/


Story Source:

The above story is based on materials provided by Karolinska Institutet. Note: Materials may be edited for content and length.


Cite This Page:

Karolinska Institutet. "Early Exposure To Tobacco Smoke Causes Asthma And Allergy." ScienceDaily. ScienceDaily, 24 July 2008. <www.sciencedaily.com/releases/2008/07/080723170835.htm>.
Karolinska Institutet. (2008, July 24). Early Exposure To Tobacco Smoke Causes Asthma And Allergy. ScienceDaily. Retrieved December 21, 2014 from www.sciencedaily.com/releases/2008/07/080723170835.htm
Karolinska Institutet. "Early Exposure To Tobacco Smoke Causes Asthma And Allergy." ScienceDaily. www.sciencedaily.com/releases/2008/07/080723170835.htm (accessed December 21, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Sunday, December 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

The Best Tips to Curb Holiday Carbs

The Best Tips to Curb Holiday Carbs

Buzz60 (Dec. 19, 2014) — It's hard to resist those delicious but fattening carbs we all crave during the winter months, but there are some ways to stay satisfied without consuming the extra calories. Vanessa Freeman (@VanessaFreeTV) has the details. Video provided by Buzz60
Powered by NewsLook.com
Sierra Leone Bikers Spread the Message to Fight Ebola

Sierra Leone Bikers Spread the Message to Fight Ebola

AFP (Dec. 19, 2014) — More than 100 motorcyclists hit the road to spread awareness messages about Ebola. Nearly 7,000 people have now died from the virus, almost all of them in west Africa, according to the World Health Organization. Video provided by AFP
Powered by NewsLook.com
Researchers Test Colombian Village With High Alzheimer's Rates

Researchers Test Colombian Village With High Alzheimer's Rates

AFP (Dec. 19, 2014) — In Yarumal, a village in N. Colombia, Alzheimer's has ravaged a disproportionately large number of families. A genetic "curse" that may pave the way for research on how to treat the disease that claims a new victim every four seconds. Duration: 02:42 Video provided by AFP
Powered by NewsLook.com
The Best Protein-Filled Foods to Energize You for the New Year

The Best Protein-Filled Foods to Energize You for the New Year

Buzz60 (Dec. 19, 2014) — The new year is coming and nothing will energize you more for 2015 than protein-filled foods. Fitness and nutrition expert John Basedow (@JohnBasedow) gives his favorite high protein foods that will help you build muscle, lose fat and have endless energy. Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins