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:6/25/2016)... , ... June 25, 2016 , ... Austin residents seeking ... American College of Mohs Surgery and to Dr. Russell Peckham for medical and surgical ... effective treatment for skin cancer. The selective fellowship in Mohs Micrographic Surgery completed by ...
(Date:6/25/2016)... TX (PRWEB) , ... June 25, 2016 , ... ... the United States, named Dr. Sesan Ogunleye, as the Medical Director of its new ... the facility Medical Director of our new Mesquite location,” said Dr. James M. Muzzarelli, ...
(Date:6/25/2016)... ... ... On Friday, June 10, Van Mitchell, Secretary of the Maryland Department of ... recognition of their exemplary accomplishments in worksite health promotion. , The Wellness at Work ... Symposium at the BWI Marriott in Linthicum Heights. iHire was one of 42 businesses ...
(Date:6/24/2016)... ... ... Those who have experienced traumatic events may suffer from a complex set ... drug or alcohol abuse, as a coping mechanism. To avoid this pain and suffering, ... traumatic event. , Trauma sufferers tend to feel a range of emotions, from depression, ...
(Date:6/24/2016)... ... June 24, 2016 , ... The Pulmonary ... Dallas that it will receive two significant new grants to support its work ... marked its 25th anniversary by recognizing patients, medical professionals and scientists for their ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... June 24, 2016 Research ... "Structural Electronics 2015-2025: Applications, Technologies, Forecasts" ... In-Mold Electronics, Smart Skin, Structural Health ... Structural electronics involves electronic and/or electrical ... structures, replacing dumb structures such as vehicle bodies ...
(Date:6/24/2016)... Dehaier Medical Systems Ltd. (NASDAQ: ... and sells medical devices and wearable sleep respiratory products ... cooperation agreement with Hongyuan Supply Chain Management Co., Ltd. ... 20, 2016, to develop Dehaier,s new Internet medical technology ... will leverage Hongyuan Supply Chain,s sales platform to reach ...
(Date:6/24/2016)... DUBLIN , June 24, 2016 ... "The World Market for Companion Diagnostic Tests" report to ... World Market for Companion Diagnostics The World ... diagnostic and personalized medicine diagnostics. Market analysis in the report ... Diagnostics Test Market (In Vitro Diagnostic Kits) by Region (N. ...
Breaking Medicine Technology: