Check this article out.  All my Ganja smokers take note!!! 

While cannabis’s links to devastating mental health problems are well known, its potential to wreck the immune system has received less attention. The American research focused on the effect of cannabis chemicals including THC on the immune system.

In tests on mice, they triggered the production of a ‘massive’ number of immune cells called myeloid-derived suppressor cells or MDSCs. These normally act as a safety brake on the immune system stopping its battle against disease from spiralling out of control.

But in the case of cancer, they may actually make it easier for tumours to grow, the European Journal of Immunology reports.

Lead researcher Dr Prakash Nagarkatti, from the University of South Carolina, said: ‘These results raise interesting questions on whether increased susceptibility to certain types of cancers or infections caused from smoking marijuana results from induction of MDSCs.

The findings could have important implications, not only for those who use the drug recreationally but for those taking it to improve their health.

The drug is used to ease the symptoms of multiple sclerosis and THC can be used in treatment of cancer, glaucoma and HIV.

DailyMail {Source}