My father has gone under a lung transplant surgery and he's not able to sleep and he's nauseous everyday. can eating some cannabinoid edibles help him?

NO!!: Cannabis has effects on the immune system that could be potentially a problem for anybody who has had a transplant and is on anti-rejection drugs which already compromise the immune system. In addition, it has potential drug interactions. There is a prescription drug, marinol, that his doctors could prescribe if they feel it is appropriate. This should be something he should discuss with his doc.