Those who are genetically predisposed to depression could be increasing this risk by smoking cannabis, researchers revealed.
Explaining further researchers said, "Some people might think that young people with a disposition for depression would start smoking cannabis as a form of self-medication, and that the presence of depressive symptoms is therefore the cause of cannabis use. However, in the longer term that is definitely not the case."
Scientists found that depressive symptoms were high among teenagers with a gene variant connected to the 'happy hormone' serotonin and who smoked pot regularly.
This led scientists to conclude that smoking cannabis can elevate the risk of depressive symptoms especially in the vulnerable lot.