The graph above shows the percentage of young people aged 12 – 17 years of age in the USA who have used marijuana in the past month.

Note the much larger number of youth usage in States which have medical marijuana. This is not surprising since young people clearly believe that if something is ‘medicine’ it must be safe to use. Sadly they do not seem to be aware of the possible health and social consequences of using this substance, or the addictive nature of marijuana. The media in the USA seem reluctant to publish the latest scientific studies which show that marijuana is far from harmless.