Navigation Links
Tobacco company misrepresented danger from cigarettes

A new UCSF analysis of tobacco industry documents shows that Philip Morris USA manipulated data on the effects of additives in cigarettes, including menthol, obscuring actual toxicity levels and increasing the risk of heart, cancer and other diseases for smokers.

Tobacco industry information can't be taken at face value, the researchers conclude. They say their work provides evidence that hundreds of additives, including menthol, should be eliminated from cigarettes on public health grounds.

The article is published in PLoS Medicine

In the new, independent study, the scientists reassessed data from Philip Morris' "Project MIX," which detailed chemical analyses of smoke and animal toxicology studies of 333 cigarette additives. Philip Morris, the nation's largest tobacco company, published its findings in 2002.

By investigating the origins and design of Project MIX, the UCSF researchers conducted their own inquiry into the Philip Morris results. They stressed that many of the toxins in cigarette smoke substantially increased after additives were added to cigarettes.

They also found, after obtaining evidence that additives increased toxicity, that tobacco scientists adjusted the protocol for presenting their results in a way that obscured these increases.

"We discovered these post-hoc changes in analytical protocols after the industry scientists found that the additives increased cigarette toxicity by increasing the number of fine particles in the cigarette smoke that cause heart and other diseases," said senior author Stanton A. Glantz, PhD, UCSF professor of medicine and director of the Center for Tobacco Control Research and Education at UCSF.

"When we conducted our own analysis by studying additives per cigarette following Philip Morris' original protocol -- we found that 15 carcinogenic chemicals increased by 20 percent or more," he said.

Additionally, in the independent study, the researchers discovered the reason behind Philip Morris' failure to identify many toxic effects in animal studies: its studies were too small.

"The experiment was too small in terms of the number of rats analyzed to statistically detect important changes in biological effects," Glantz said. "Philip Morris underpowered its own studies."

The results of "Project MIX" were first published as four papers in a 2002 edition of Food and Chemical Toxicology, a journal whose editor and many members of its editorial board had financial ties to the tobacco industry. While Philip Morris was trying to get the papers published, the company scientist who led Project Mix sent an email to a colleague describing the peer review process as "an inside job."

In the new study, the researchers used documents made public as a result of litigation against the tobacco industry. The documents are available to the public through UCSF's Legacy Tobacco Documents Library.

Contact: Elizabeth Fernandez
University of California - San Francisco

Related medicine news :

1. New report identifies research needed on modified risk tobacco products
2. UCSF to receive tobacco papers, funding to improve public access to the documents
3. States could see substantial savings with tobacco control programs
4. UIC awarded $14 million to study tobacco pricing and media
5. National Study Will Track Tobacco Use in U.S.
6. FDA and NIH announce joint study on tobacco use and risk perceptions
7. Big Tobacco knew radioactive particles in cigarettes posed cancer risk but kept quiet
8. Stronger tobacco control policy in the Netherlands would save thousands of lives
9. UCSF, UC Merced to study effectiveness of anti-tobacco programs
10. Effects of tobacco use among rural African American young adult males
11. Illegal Tobacco Sales to U.S. Minors Reach All-Time Low
Post Your Comments:
Related Image:
Tobacco company misrepresented danger from cigarettes
(Date:11/27/2015)... ... November 28, 2015 , ... There is only one major ... billings from last year? , This question has not been an easy question to ... the retirement age and the younger workforce don’t share the same discipline around working ...
(Date:11/27/2015)... ... November 27, 2015 , ... A team of Swiss doctors has released a ... Mesothelioma has just posted the findings on the website. Click here to read ... of 136 mesothelioma patients who were treated with chemotherapy followed by EPP surgery. Among ...
(Date:11/27/2015)... , ... November 27, 2015 , ... ProSidebar: Fashion ... Final Cut Pro X. With ProSidebar: Fasion, video editors can easily add an ... as a minimalist title opener. Utilize presets featuring self-animating drop zones, lines, bars, ...
(Date:11/27/2015)... (PRWEB) , ... November 27, 2015 , ... ... failing. Secura Consultants has prided itself for not only fulfilling the needs of ... protection solutions at an affordable price and providing top-tier customer service. However, there's ...
(Date:11/27/2015)... ... November 27, 2015 , ... Avid collector, Andrew Hawley from Vintage Rock ... concert posters. This is one of Joplin's most famous and beautiful concert posters. The ... of Michigan in Ann Arbor. The According to Hawley, "It is hard to believe ...
Breaking Medicine News(10 mins):
(Date:11/26/2015)... 2015 --> --> ... to find optimal contrast weighting of MRI for patients ... signed a research agreement with SyntheticMR in order to use ... it is possible to generate multiple contrast images from a ... has left, thus making it possible to both fine tune ...
(Date:11/26/2015)... November 26, 2015 ... the "2016 Future Horizons and Growth ... Testing Market: Supplier Shares, Country Segment Forecasts, ... their offering. --> ) ... "2016 Future Horizons and Growth Strategies in ...
(Date:11/26/2015)... Nov. 26, 2015 Research and Markets ( ... "Advanced Wound Care Market by Type (Dressings, Therapy Devices, ... (In-Patient Facility, Out-Patient Facility), and Geography - Global Forecast ... --> --> The purpose ... and forecast of the global advanced wound care market. ...
Breaking Medicine Technology: