Nicotine Levels Higher in Children Exposed to Secondhand Smoke in the Home

Dec 03, 2009

(PhysOrg.com) -- New research published in Cancer Epidemiology, Biomarkers & Prevention, a journal of the American Association for Cancer Research, supports the World Health Initiative’s efforts for a home smoking ban, according to researchers at Johns Hopkins University.

Specifically, hair concentrations were higher in children exposed to secondhand smoke at home, and the younger the children, the higher the concentration under the same level of secondhand smoke exposure at home.

“This study provides adequate evidence to support home smoking bans, particularly in homes with small children,” said Sungroul Kim, Ph.D., a research associate at the Institute for Global Tobacco Control at the Johns Hopkins Bloomberg School of Public Health.

Kim and colleagues used hair nicotine concentrations as a biomarker of exposure, because it is less affected by day-to-day exposure variation compared to the presence of nicotine in other body fluid samples.

The study included 1,284 children from 31 countries in Latin America, Asia, Eastern Europe and the Middle East.

Among the houses with high nicotine concentrations in the indoor air (more than 10 mg/m3 compared with less than 0.01 mg/m3), women had three times the level of hair nicotine concentrations; children had a 6.8-fold increase in hair nicotine concentrations.

Furthermore, children who were younger than 6 years old had 12 percent higher levels of nicotine concentration than those who were older. Those who spent more than 19 hours a day at home had 15 percent higher levels of nicotine concentration in their hair than those who spent less than 19 hours a day at home after adjusting other explanatory variables.

“Clearly the younger are the most at risk; this is a call to action on a global level,” said Kim.

These results were published as part of a special focus on tobacco in the December issue of Cancer Epidemiology, Biomarkers & Prevention.

Provided by American Association for Research (news : web)

Explore further: Researchers review help for navigating 'Dr Google'

add to favorites email to friend print save as pdf

Related Stories

Secondhand smoke a risk for children worldwide

Mar 05, 2008

Parents worldwide are doing little to protect their children from exposure to secondhand smoke, according to a study by researchers at the Johns Hopkins Bloomberg School of Public Health. Exposure to secondhand smoke has ...

Toddlers affected most by secondhand smoke exposure at home

Mar 13, 2008

Secondhand smoke in the home appears to induce markers for heart disease as early as the toddler years, researchers reported at the American Heart Association’s 48th Annual Conference on Cardiovascular Disease Epidemiology ...

Children unaffected by smoking ban consequences

Nov 24, 2009

The smoking ban in Wales has not displaced secondhand smoke from public places into the home. A study of 3500 children from 75 primary schools in Wales, published in the open access journal BMC Public Health, found that t ...

Recommended for you

Research looks to combat US Latina immigrant obesity

5 hours ago

According to the U.S. Census Bureau, Latinos are the largest minority group in the United States, comprising 16.7% of the population. Approximately one-third of Latinos are obese and are 1.2 times as likely to be obese compared ...

User comments : 0