On Sat, 07 Feb 2009 14:43:07 GMT, "Susan" > wrote:

>
>"zara" > wrote in message
...
>>
>> "Ted" > wrote in message
>> ...
>>>I don't like cannabis because it destroys the lungs like tobacco.
>>> Also, about 20% of hospital admissions are directly or indirectly caused
>>> by smoking tobacco.
>>> The body needs to take in oxygen and to get rid of carbondioxide.
>>> Cannabis & tobacco destroy the very cells in the lungs that take in
>>> oxygen and get rid of carbondioxide.
>>
>> Not according to the latest medical studies..
>>
>> They actually claim it prevents lung cancer.
>>
>> Stop spreading FUD. No one is forcing you to toke.
>>
>> http://www.macfixit.com/article.php?...00902052309411
>>
>> http://www.webmd.com/lung-cancer/new...to-lung-cancer
>
>Perhaps not cancer but cannabis joints damage lungs more than tobacco -
>study
>
>http://www.guardian.co.uk/society/20...dalcohol.drugs
>
>http://www.sciencedaily.com/releases...0123104017.htm
>
>http://www.well.com/user/woa/fspot.htm
>How does marijuana affect the lungs?
>Scientists believe that marijuana can be especially harmful to the lungs
>because users often inhale the unfiltered smoke deeply and hold it in their
>lungs as long as possible. Therefore, the smoke is in contact with lung
>tissues for long periods of time, which irritates the lungs and damages the
>way they work. Marijuana smoke contains some of the same ingredients in
>tobacco smoke that can cause emphysema and cancer. In addition, many
>marijuana users also smoke cigarettes; the combined effects of smoking these
>two substances creates an increased health risk.
>
>Can marijuana cause cancer?
>Marijuana smoke has been found to contain more cancer-causing agents than is
>found in tobacco smoke. Examination of human lung tissue that had been
>exposed to marijuana smoke over a long period of time in a laboratory showed
>cellular changes called metaplasia that are considered precancerous. In
>laboratory test, the tars from marijuana smoke have produced tumors when
>applied to animal skin. These studies suggest that it is likely that
>marijuana may cause cancer if used for a number of years.
>
The study quoted on WebMD, compares some one who smoked 1 to 1 1\2
joints a day to some one who smoked 40 cigarettes a day. Hardly a
valid comparison. 22,000 joints divided by 40 years, divided by 365
day per year.