Can weed kill you

Not directly. The active agent, THC, has some side effects on physiology and psychology, but addiction has fewer withdrawal symptoms than other illegal drugs.

Still , there are lung effects analogous to cigarette smoking after chronic use, and the loss of proper judgment while "under the influence" is similar to that of alcohol use. This can result in accidental injuries to the user and others, some of which could be severe or fatal. The illegal nature of the drug also brings the risk of incarceration, which adds additional risk of physical harm.