The Largest and most Comprehensive Study on the Impact of Marijuana

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The Largest and most Comprehensive Study on the Impact of Marijuana


The latest report by the National Academies of Sciences, Engineering and Medicine delivers the most comprehensive review of the impact of cannabis on human health.

In this review are included studies published from 1999 until now, relating to temporary and therapeutic use, and its impact on health.



Although many countries in the world legalized marijuana use for therapeutic purposes, there are discussions about its influence. The new report will certainly give an answer to many questions, but scientists point out that to reach definite conclusions it is necessary to conduct additional research.

Scientific Committee, which collected all this data into account, took more than 10,000 published scientific articles and made nearly 100 conclusions.

“The use of marijuana with age becomes more accepted, especially in the medical and recreational purposes. This prompted the alarm of many issues related to health, a lack of scientific findings led to a lack of awareness of the negative health impacts. Therefore, we conducted extensive research in recent studies, to determine what is the solid evidence that science has, and which areas still need to be investigated” said Marie McCormick, lead author of the project and a professor at Harvard.



The Therapeutic Effect

Adults, among other things, use marijuana to relieve chronic pain. Scientists have found convincing evidence that this is an efficient method, and that the drug significantly reduces painful symptoms in patients. In adults suffering from muscle spasms caused by multiple sclerosis, discovered a significant amount of evidence that short-term use relieves cramps. Also, in adults suffering from nausea caused by chemotherapy, were found credible evidence that it is effective in this field.


Injuries and Deaths

The evidence suggests that the use of cannabis before driving a motor vehicle increases the risk of traffic accidents. In addition, it has been shown that in states where it is legal, there is greater risk of an overdose of cannabis in children. In 78 percent of cases it is the unintentional exposure of a child to marijuana and occurs more often in children younger than six years.




As for the connection between marijuana and cancer, scientists have shown that consumption of marijuana does not increase the risk of cancer that is most often associated with cigarette smoking – lung cancer, tongue, neck …


Heart Attack, Stroke and Diabetes

The Committee of scientists has concluded that it is necessary to conduct additional research to determine the possible connection between marijuana with heart attack and stroke or diabetes. However, some studies show that smoking marijuana may increase the risk of heart attack.



Mental Health

Disclosed evidence shows that marijuana use can increase the risk of developing schizophrenia, and other forms of psychosis, anxiety disorder, and to a lesser extent the development of depression. On the other hand, in patients with schizophrenia, marijuana is associated with better learning and memory. People who use it frequently are more prone to suicidal thoughts, but in people with bipolar disorder marijuana use exacerbates the symptoms.

In this comprehensive study, it is also revealed that the initial use of marijuana in early age increases the risk of problematic, frequent consumption in the latter days, and that immediately after the consummation there are decreased learning abilities, memory and concentration.



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