Despite the many arguments that suggests marijuana is a dangerous substance, there hasn't been a thorough study yet on this extraordinary plant. ... Several studies argue that long-term use of marijuana has been shown to produce cancerous cell changes and other studies suggest that smoking marijuana can lead to lung cancer. ... According to a recent study by the American Association for the Advancement of Science, ten chronic marijuana users were evaluated as test subjects to see if marijuana had any effect on the cognitive functioning of the human body. ... We have relied on many pla...

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