The paper that I wrote suggests that ALL chronic smoking of marijuana is a symptoms of malnutrition, that the cannabis plant is a ‘symbiote’ to the human being, similar to the way that bamboo is to the panda bear and the eucalyptus  is to the koala. We evolved from a form that was more like a slothy bear. I would imagine that drinking and anything else is a substitution  for trying to find what is missing- Cannabis.