Medical marijuana bags seal of approval

Preliminary results of a survey of 442 cannabis growers found 54% were using it for medical purposes for conditions such as depression, arthritis and chronic pain. 

More than half (54%) said their doctor did not recommend it and was not aware they were using it. Some 19% said their doctor recommended it, while 6% said their doctor advised against using it. 

The results, which form part of an international study, are