Science news articles about 'marijuana smoke'

... tobacco smoking," write Dr. Wan Tan of the University of British Columbia and St. Paul' ... Dr. Tashkin states that "we can be close to concluding that marijuana smoking by itself does not lead to COPD." ...

Marijuana smoke has joined tobacco smoke and hundreds of other chemicals on a list of substances that California regulators say cause cancer.

... in some countries, use of marijuana is increasing. Scientists know that marijuana smoke has adverse effects on the lungs. However, there is little knowledge about marijuana's potential to cause lung ...

... Zealand. During the same time period, marijuana use in North America, Europe and Australia has risen ... know very little about the long-term health consequences of marijuana smoking, especially heavy ...

... and marijuana increases the risk of respiratory symptoms and chronic obstructive pulmonary disease (COPD), found a new study. Smoking only marijuana, however, was not associated with increased risks.

Using a highly sensitive new test, scientists are reporting "convincing evidence" that marijuana smoke damages the genetic material DNA in ways that could increase the risk of cancer.

... SAAF program were no more likely than their counterparts without the gene to have engaged in drinking, marijuana smoking, and sexual activity. Moreover, youths with the gene in the comparison group ...

... two to get their heads around an apparent contradiction recently enshrined in state law. The same marijuana smoke that doctors can recommend to ease cancer patients' suffering ...