Navigation Links
New study expands the list of hazardous chemicals in smokeless tobacco
Date:8/16/2009

WASHINGTON, Aug. 16, 2009 Attention all smokeless tobacco users! It's time to banish the comforting notion that snuff and chewing tobacco are safe because they don't burn and produce inhalable smoke like cigarettes. A study that looked beyond the well-researched tobacco hazards, nitrosamines and nicotine, has discovered a single pinch the amount in a portion of smokeless tobacco exposes the user to the same amount of another group of dangerous chemicals as the smoke of five cigarettes.

The research on polycyclic aromatic hydrocarbons (PAH) in smokeless tobacco was reported here today at the 238th National Meeting of the American Chemical Society (ACS). It adds to existing evidence that smokeless contains two dozen other carcinogens that cause oral and pancreatic cancers, the scientists say.

"This study once again clearly shows us that smokeless tobacco is not safe," said Irina Stepanov, Ph.D., who led the research team. "Our finding places snuff on the same list of major sources of exposure to polycyclic aromatic hydrocarbons as smoking cigarettes." PAHs are widespread environmental contaminants formed as a result of incomplete burning of wood, coal, fat in meat, and organic matter. PAHs form, for instance, during the grilling of burgers, steaks and other meat.

The findings come in the midst of a rise in both marketing and consumption of smokeless tobacco, which many consumers regard as less dangerous than other forms of tobacco. Estimates suggest that sales of moist snuff in the United States have doubled since the 1980s.

"The feeling of safety among some smokeless users is wrong," said Stepanov, a chemist with Masonic Cancer Center, University of Minnesota, Minneapolis. "A total of 28 carcinogens were identified in smokeless tobacco even before our study. Continued exposure to these over a period of time can lead to cancer. Now we have found even more carcinogens in snuff." In addition to the heightened cancer risk, she noted that chronic use of snuff leads to nicotine addiction, just as it does with cigarette smoking.

Stepanov said that until recently, scientists believed that only trace amounts of PAH existed in snuff because the tobacco was not burned when used. This assumption proved to be wrong. "Even though smokeless tobacco use does not involve burning, moist snuff is getting contaminated with PAH during its manufacturing," according to Stepanov. The most likely source of this contamination with PAH is the curing process that is used to turn tobacco leaves into snuff. This process is called 'fire-curing', and it puts tobacco into direct contact with the smoke generated by smoldering hardwoods a rich source of various PAHs.

Looking to the next project, she said the team is working on a study that will examine a wide range of smokeless tobacco brands to compare PAH levels among them.


'/>"/>

Contact: Michael Bernstein
m_bernstein@acs.org
202-872-6042
American Chemical Society
Source:Eurekalert  

Related medicine news :

1. Penn study finds pro-death proteins required to regulate healthy immune function
2. New study shows promise in reducing surgical risks associated with surgical bleeding
3. Study, meta-analysis examine factors associated with death from heatstroke
4. Study suggests loss of 2 types of neurons -- not just 1 -- triggers Parkinsons symptoms
5. Study says COPD testing is not measuring up
6. Preclinical study suggests organ-transplant drug may aid in lupus fight
7. Ability to cope with stress can increase good cholesterol in older white men, study finds
8. High alcohol consumption increases stroke risk, Tulane study says
9. Mailman School of Public Health study examines link between racial discrimination and substance use
10. Pitt study finds inequality in tobacco advertising
11. Stanford study highlights cost-effective method of lowering heart disease risks
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New study expands the list of hazardous chemicals in smokeless tobacco
(Date:6/26/2016)... ... June 27, 2016 , ... Quality metrics are proliferating in cancer ... they remain in the eye of the beholder, according to experts who offered insights ... American Journal of Managed Care. For the full issue, click here . , ...
(Date:6/26/2016)... (PRWEB) , ... June 26, 2016 , ... ... fertility once they have been diagnosed with endometriosis. These women need a treatment ... also require a comprehensive approach that can help for preservation of fertility and ...
(Date:6/25/2016)... , ... June 25, 2016 , ... First Choice ... States, named Dr. Sesan Ogunleye, as the Medical Director of its new Mesquite-Samuell Farm ... Medical Director of our new Mesquite location,” said Dr. James M. Muzzarelli, Executive Medical ...
(Date:6/24/2016)... ... June 24, 2016 , ... A recent article published June 14 ... The article goes on to state that individuals are now more comfortable seeking to ... operations such as calf and cheek reduction. The Los Angeles area medical group, Beverly ...
(Date:6/24/2016)... ... , ... Global law firm Greenberg Traurig, P.A. announced that 20 Florida attorneys ... peers for this recognition are considered among the top 2 percent of lawyers practicing ... members of this year’s Legal Elite Hall of Fame: Miami Shareholders Mark D. ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... BEVERLY HILLS, Calif. , June 23, 2016 ... faced the many challenges of the current process. Many of ... option because of the technical difficulties and high laboratory costs ... would have to offer it at such a high cost ... to afford it. Dr. Parsa Zadeh , ...
(Date:6/23/2016)... , June 23, 2016 ... CAPR ), a biotechnology company focused on ... today announced that patient enrollment in its ongoing ... Duchenne) has exceeded 50% of its 24-patient target. ... in the third quarter of 2016, and to ...
(Date:6/23/2016)... -- Astellas today announced the establishment of Astellas Farma Colombia (AFC), a new affiliate with operations headquartered in ... . ... ... ... Astellas is ...
Breaking Medicine Technology: