Weed lovers world-wide claim that marijuana is one of the safest drugs in the world. While it may not have some of the horrible side effects of crystal meth or LSD, it is naive to think cannabis may have no effect on your health at all. An occasional spliff will not harm you yes, but abusing marijuana can be bad news for your well-being. We know cannabis can have adverse health effects, but how does it impact your life in general?