There is a new study out by the Rhode Island hospital that shows that just because medical marijuana is used, that does not mean that teenage will then show a higher rate of usage of pot.

The study finding indicate that medical marijuana use doesn't increase teen use.  So. legalizing marijuana for medical purposes does not necessarily mean that more teens will use pot. 

The research came as part of study by the Rhode Island Hospital.  This study, done five years after the state approved the use of medical marijuana, showed that teens would not necessarily being using more pot just because medicinal pot selling would be allowed in the state. 

Researchers compared a federal survey of more than 32-thousand students in Rhode Island and Massachusetts, where medical marijuana is illegal.  The data showed virtually no difference in use between the states between 2007 and 2009.  Researchers say more studies will be needed.