Profile image
By NORML Foundation (Reporter)
Contributor profile | More stories
Story Views
Now:
Last Hour:
Last 24 Hours:
Total:

Study: Cannabis Smoking Not Associated With Increased Lung Cancer Risk Or Other Serious Pulmonary Complications

% of readers think this story is Fact. Add your two cents.


Originally published at blog.NORML.org

A forthcoming review to be published in journal Annals of the American Thoracic Society reiterates that the ingestion of cannabis smoke poses nominal pulmonary risks compared to those associated with tobacco smoke. The author of the paper, Donald P. Tashkin, MD, emeritus professor of medicine and medical director of the Pulmonary Function Laboratory at the David Geffen School of Medicine at University of California, Los Angeles performed US-government sponsored studies of marijuana and lung function for over 30 years.

A preview of Dr. Tashkin’s forthcoming review appears on the American Thoracic Society news website here. It reads:

Dr. Tashkin found that regular smoking of marijuana by itself causes visible and microscopic injury to the large airways that is consistently associated with an increased likelihood of symptoms of chronic bronchitis that subside after cessation of use. He also found that the evidence does not indicate that habitual use of marijuana leads to significant abnormalities in lung function when assessed either cross-sectionally or longitudinally, except for possible increases in lung volumes and modest increases in airway resistance of unclear clinical significance.

The author finds no clear link between marijuana use and the development of COPD or lower respiratory tract infections. In addition, “findings from a limited number of well-designed epidemiological studies do not suggest an increased risk for the development of either lung or upper airway cancer from light or moderate use, although evidence is mixed concerning possible carcinogenic risks of heavy, long-term use,” Dr. Tashkin notes. “In summary, the accumulated weight of evidence implies far lower risks for pulmonary complications of even regular heavy use of marijuana compared to the grave pulmonary consequences of tobacco.”

The full paper will be available later this month.

In May, presenters at the annual meeting of the American Academy for Cancer Research reported that subjects who regularly inhale cannabis smoke possess no greater risk of lung cancer than do those who consume it occasionally or not at all — according to an analysis of six case-control studies, conducted between 1999 and 2012, involving over 5,000 subjects (2,159 cases and 2,985 controls) from around the world.

Last year, clinical data published in the Journal of the American Medical Association (JAMA) reported that subjects’ exposure to moderate levels of cannabis smoke, even over the long-term, is not associated with significant adverse effects on pulmonary function.

Vaporizers, which heat marijuana to a point where cannabinoid vapors form, but below the point of combustion, reduce subjects’ intake of potentially hazardous combustible compounds. In several clinical trials, investigators have concluded that vaporization is a “safe and effective” cannabinoid delivery mode that “does not result in exposure to combustion gases.” Researchers also report that vaporization results in higher plasma concentrations of THC compared to smoked cannabis.



Source: http://blog.norml.org/2013/06/19/study-cannabis-smoking-not-associated-with-increased-lung-cancer-risk-or-other-serious-pulmonary-complications/

Support BeforeitsNews by trying our natural health products! Join our affiliate program
Order by Phone at 888-809-8385 or online at www.mitocopper.com


Get our Free Ebook, "Suppressed Health Secrets"  with  Natural Cures THEY don't want you to know!

APeX - Far superior to colloidal silver!  Destroys Viruses, Bacteria, Pathogens with Oxygen plus Silver!Supreme Fulvic - Nature's most important supplement! Vivid Dreams again!
Ultimate Curcumin - Natural pain relief, reduce inflammation and so much more.
MitoCopper - Bioavailable Copper destroys pathogens and gives you more energy. (See Blood Video)
Oxy Powder - Natural Colon Cleanser!  Cleans out toxic buildup with oxygen!  
Organic Hemp Extract (CBD) - Full Spectrum high CBD (3300mg) hemp extract eases stiff joints, relieves stress and more!
Nascent Iodine - Promotes detoxification, mental focus and thyroid health.

Smart Meter Cover -  Reduces Smart Meter radiation by 96%!  (See Video)


FINAL WARNING!   Diseases are EXPLODING!  Watch this Video about APeX and You'll THROW AWAY Your Colloidal Silver!   APeX destroys Viruses, Bacteria and other Pathogens with the power of Oxygen PLUS Silver!  Nobody else has a product like THIS!   See why the inventor hasn't been sick in 16 years and why you'll never hear about it on the FAKE NEWS!  Get some now and tell your friends about it too so we can reach more people!  

APeX Interview - Superior to Colloidal Silver from Lee Canady on Vimeo.

Learn about APeX Here and Get the 50 Page Report in PDF format.   Call us at 888-809-8385 to order by phone.

Report abuse

    Comments

    Your Comments
    Question   Razz  Sad   Evil  Exclaim  Smile  Redface  Biggrin  Surprised  Eek   Confused   Cool  LOL   Mad   Twisted  Rolleyes   Wink  Idea  Arrow  Neutral  Cry   Mr. Green

    SignUp

    Login

    Newsletter

    Email this story
    Email this story

    If you really want to ban this commenter, please write down the reason:

    If you really want to disable all recommended stories, click on OK button. After that, you will be redirect to your options page.