Cool stuff National Cancer Institute says pot really works March 27, 2011 bitchin' bob Leave a comment Check this out folks! The NCI has issued a statement that in clinical trials, cancer patients successfully treated nausea and vomiting, sleeplessness, pain, and loss of appetite using marijuana. It stated that cannabis was being investigated as having not only a palliative effect on symptoms, but also a possible “direct antitumor effect”.