Present research results that cause mild poisoning by passive smoking of cannabis

ByAndrea Kirkby

In tobacco in JapanPassive smokingWas a problem and smoke progressed at once but the research team at Johns Hopkins University announced the results of research that caused mild poisoning symptoms due to the passive smoking of cannabis in a sealed space.

'Extreme' Exposure to Secondhand Cannabis Smoke Causes Mild Intoxication - 05/13/2015
http://www.hopkinsmedicine.org/news/media/releases/extreme_exposure_to_secondhand_cannabis_smoke_causes_mild_intoxication

'Extreme' exposure to secondhand cannabis smoke causes mild intoxication | EurekAlert! Science News
http://www.eurekalert.org/pub_releases/2015-05/jhm-et051215.php

Cannabis is one of the most widely used drugs in the world, "Many people are exposed to the passive smoking of marijuana," said psychiatrist researcher Evan Herman. Studies have shown that as a result of indirect nonsmokers smoking marijuana smoke in poorly ventilated rooms or in closed vehicles, the first few hours have a decline in the sensation of mild poisoning symptoms and cognitive abilities, I heard that there is a possibility that a positive reaction of cannabis appears.

ByDisordered eyes gave me this photographs

In conducting the experiment, he cannabis at least twice a week and is active ingredient of cannabisTetrahydrocannabinol (THC)Was detected and no other drugs were detected and 7 people aged 18 to 45 were collected, never suffered from cannabis in the past 6 months, no other drug components were detected 18 to 45 years old Twelve of them also gathered as participants in the experiment. Pregnant women are not included among participants, and nonsmokers participate only in one experiment.

The experimental environment was that the smoker smoked marijuana containing a lot of THC in a closed 3 m × 4 m room and six smokers and six nonsmokers spend in the same space for one hour thing. We also prepared two "ventilated rooms" and "no ventilation rooms" and conducted two experiments.


After completion of the experiment, blood, urine, saliva and hair of all the participants are inspected at regular intervals. As a result, THC was detected from urine and blood of nonsmokers who were in a closed space not ventilated.

THC in the blood was continuously detected from the start of the experiment until 3 hours after the end of the experiment. Meanwhile, 4 hours after the end of the experiment, when 50 ng (nanogram) of THC was detected per urine of urine, it showed a positive reaction, but when examined with a drug test kit, one nonsmoker showed positive It was. Also, between 2 hours after the completion of the experiment and 22 hours after the completion of the experiment, when 20 ng of THC was contained in 1 mg of urine, 4 positive patients showed a positive reaction when examined with a test kit showing a positive reaction It was.

On the other hand, THC was not detected by a non smoker even in a highly accurate examination when in a ventilated environment with a fan. In addition, in a room where moderate ventilation was done, although a hungry sensation, a side effect of cannabis, was confirmed by nonsmokers, there was no other big reaction.

ByAndreas Andrews

Also, a test to measure behavior and cognitive abilities of nonsmokers was done after the experiment, but although mistakes were conspicuous, it seems that the speed of replying is faster than in the test before the experiment. While some changes were recognized, it was concluded from the results of the tests conducted before and after the experiment that "the influence on passive smoking behavior and cognitive ability is small."

This study to investigate poisoning symptoms due to passive smoking in cannabis affects the pharmaceutical industry and the automobile industry, co-author Edward Kohn says. In addition, in the experimentDrug Abuse and Mental Health Administration Agency (SAMHSA)The cannabis used in the experiment supported byNational Institute for Drug Abuse (NIDA)It is said that it was provided by.