Smoking a joint daily for 20 years would not cause anything damaging to the lungs, unlike tobacco. This is shown in a recent study published in the Annals of the American Thoracic Society. This is good news for cannabis users, but it does not mean that they do not feel any respiratory symptoms, nor should they forget their potential dangers to the brain.
Conducted by researchers at Emory University in Atlanta, USA, on a large sample of adults aged 18 to 59, this study shows that cannabis exposure is not associated with a decline in cannabis capacity. lungs (spirometry).
The Tiffeneau coefficient is a ratio obtained by functional exploration of the respiratory organs. It shows how much the bronchi are blocked. With a joint daily for 20 years, the researchers found that this coefficient was intact.
Smoking a joint daily for 20 years would not damage the lungs:
Nothing to do with the effects of tobacco, according to them. They even believe that cannabis may “be associated with protective effects on the lungs in long-term tobacco smokers”.
In 2012, another study, published in the Journal of the American Medical Association, also went in that direction. It showed that the lung capacity of cigarette smokers was decreasing, unlike that of cannabis smokers, who could even have positive effects. “Marijuana can have beneficial effects on the control of pain, appetite, mood, and the management of other chronic symptoms. Our findings suggest that occasional use of marijuana for these or other purposes may not be associated with adverse effects on lung function, “reads.
Risks despite everything
Improved lung capacity could be explained by “the stretch required when inhaling large puffs that characterizes cannabis use.”
But beware, this 2012 study pointed out that one joint per day for 10 years was associated with a decline in capabilities. The benefits of cannabis use were demonstrated for occasional smokers.
Another downside, it should be noted that in the United States, smokers joints would have less of a tendency to mix tobacco grass, which is more a habit in France. Smoking cannabis mixed with tobacco every day is like smoking a cigarette a day.
Finally, even if the capacity of the lungs does not decline, cannabis users may feel some symptoms: impression of bronchitis, cough, sore throat, short breath. Not to mention the negative effects that this drug can have on the brain, especially among young people. The risks are therefore not totally absent, but far removed from those related to tobacco. In France, cannabis use is still illegal.