Cannabis can be administered through various methods.
Forward-thinking countries have recognized the healing benefits of cannabis. The most recent legislation of medicinal and recreational marijuana legalization was in Canada in October 2018.
More recently, scientists reported that THC and other cannabinoids such as CBD slow growth and/or cause death in certain types of cancer cells growing in lab dishes. Some animal studies also suggest certain cannabinoids may slow growth and reduce spread of some forms of cancer.
A few studies have found that inhaled marijuana can be helpful treatment of neuropathic pain.
Studies have shown that people who took marijuana extracts in clinical trials tended to need less pain medicine.
Smoked marijuana has also helped improve food intake in cancer patients in studies.
A number of small studies of smoked marijuana found that it can be helpful in treating nausea and vomiting from chemo.
How Marijuana Helps People
There have been some early clinical trials of cannabinoids in treating cancer in humans and more studies are planned. While the studies so far have shown that cannabinoids can be safe in treating cancer, they do not show that they help control or cure the disease.