Published by the Health and Medicine Division, part of the U.S. National Academies of Science, Engineering, and Medicine, the analysis combed through more than 10,000 scientific studies and came to nearly 100 conclusions. See some overall conclusions below
In 2016 paper in the journal Clinical Psychology Review concluded that cannabis may have benefit patients with depression, anxiety, and PTSD. These findings were based on minimal dosing of a cannabis joint, which findings have also suggested that higher amounts of THC may increase anxiety. Other research have also suggested that cannabis may be more harmful than helpful for people with certain mental health conditions, like psychosis or bipolar disorders.
In 2017 the National Academies of Sciences have concluded there is great evidence that supports the use of medical cannabis for pain relief. Cannabis products also have shown to be effective at calming muscle spasms caused by multiple sclerosis and easing nausea and vomiting due to chemotherapy.
There is moderate evidence, based on a thorough study done by the National Academies of Science, that cannabis derived products may help people who have trouble sleeping due to sleep apnea, fibromyalgia, or chronic pain.
Cannabidiol oil, a derivative of marijuana, reduces seizures by 39% in children with Dravet syndrome, according to a study in the New England Journal of Medicine.
In a 2016 study in the journal Health Affairs, researchers found that there were 1,826 fewer daily doses of painkillers prescribed per year, on average, in states where medical cannabis was legal compared to states it's not. It may be helpful for patients recovering from opiod addiction
Studies have shown that the oil may inhibit the growth of cancer cells outside of the human body, but most research and real life trials to backup these findings.
It is becoming aware that more women are using cannabis to treat morning sickness, but evidence suggests that prenatal exposure to cannabis is associated with developmental and health problems in children, low birth weight, anemia, and impaired impulse control, memory, and attention. Woman pregnant or considering becoming pregnant should be advised to avoid using cannabis.
Recent studies claim there are the first known deaths directly attributed by intoxication from cannabis. Researchers concluded from these cases, that the risk of cannabis-related cardiovascular effects is low, especially for healthy people. Patients with heart complications should avoid the use of cannabis, since it may have temporary effects on the cardiovascular system.