If you see alot of old hippies around - this may be why.
SFGate.com : Pot smoking not so harmful to lungs, study finds
Smoking a joint from time to time won't damage the lungs, even after years of drug use, according to a study led by UCSF researchers that disproves one of the major concerns about marijuana - that smoking it must be just as risky as lighting up a cigarette.
The study, results of which were published Tuesday in the Journal of the American Medical Association, found that the lung capacity of people who smoked marijuana was not diminished by regular toking, even among those who smoked once or twice a week.
Only heavy marijuana users - those who smoked 20 or more joints a month - saw a negative impact on the pulmonary system, but that level of marijuana use is unusual, researchers said. In fact, they said, it may be that marijuana smoke doesn't affect lung function the way tobacco does simply because people don't smoke as many joints as they do cigarettes.
Burning Incense Is Psychoactive: New Class Of Antidepressants Might Be Right Under Our Noses
An international team of scientists, including researchers from Johns Hopkins University and the Hebrew University in Jerusalem, describe how burning frankincense (resin from the Boswellia plant) activates poorly understood ion channels in the brain to alleviate anxiety or depression. This suggests that an entirely new class of depression and anxiety drugs might be right under our noses.
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