Discussion in 'Cannabis & Health' started by desolated000, Jul 18, 2006.

  1. desolated000

    desolated000 Newbie

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    May 22, 2006
    Hi, I heard that pot smoke won't give you cancer according to one of those university studies. Although I searched and "maijuana emphizima" came up on google with about 4 results all unrelevent.

    Anyone know the facts behind this?
  2. Forthesevenlakes

    Forthesevenlakes Platinum Member

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    Feb 26, 2006
    This study is a few years old, but it seems to say that marijuana could conceivably cause emphysema. Marijuana smoke does contain carcinogens, and I have heard that it actually has more carcinogens than cigarettes if dealing with equal amounts of each. The catch is that most tobacco smokers smoke more often and in greater amounts than most cannabis smokers, so for the average cannabis smoker, there is little danger of emphysema. However, the possibility of developing it as a result of smoking weed is still there. SWIM guesses there are probably studies refuting this article, and articles refuting those, but he's posting this as a starting point for discussion:

    Emphysema linked to smoking marijuana
    Large lung bullae in marijuana smokers 2000;55:340B2
    Regular smokers of cannabis or pot may run the risk of developing the crippling lung disease emphysema, reports a study in Thorax.
    The study reports four cases of the early stages of the disease in four young men aged 27, 35, 44 and 46 who smoked cannabis regularly. Examination showed that large areas of both lungs in each of the men had simply disappeared and been replaced with cysts. This is a form of emphysema, a disease that gradually diminishes the surface area of the lungs. It is usually associated with heavy cigarette smoking.
    Each of the men described had been or were current smokers, but the amount smoked was minimal in three of them: two cigarettes a day in one, half an ounce of tobacco in another. One man smoked only cigars. But all of them had been, or continued to be, heavy cannabis users. The 27 year old had smoked several pipes of pot a day for several years; both the men in their 40s smoked two or three joints a day, while the man in his 30s had smoked two joints a week for about 20 years.
    The common perception of cannabis, say the authors, is that it is harmless. But other than the mind altering substances in pot, smoke from both cigarettes and joints is the same, only more tends to enter the lungs in pot smokers, because of the long drags on joints. The physical effects on the lungs of smoking three to four joints a day are equivalent to those produced by smoking a pack of cigarettes a day, say the authors.