[ti:Medicinal Cannabis Not Proven in Mental Health]
[00:00.04]Researchers in Australia say evidence is weak as to whether medicinal cannabis treatments
[00:07.22]can help with mental illnesses such as anxiety, depression and psychosis.
[00:15.52]They add that doctors should be very careful when deciding to give the treatments to patients.
[00:24.84]The researchers examined scientific studies
[00:28.63]on the effects of medicinal cannabinoids on six mental health disorders.
[00:35.76]They found "a lack of evidence for their effectiveness."
[00:41.56]Louisa Degenhardt is a drug and alcohol expert at Australia's University of New South Wales in Sydney.
[00:51.48]She said her team's findings have important effects for countries
[00:57.29]such as the United States, Australia, Britain and Canada.
[01:04.32]In those countries, doctors are making medical cannabis available for patients with some kinds of illnesses.
[01:13.24]The study results appeared in the publication The Lancet Psychiatry.
[01:20.80]Some military veterans and others who suffer post-traumatic stress disorder (PTSD),
[01:27.06]depression and anxiety say cannabis is helpful in easing some of their symptoms.
[01:36.16]Degenhardt told Reuters, "Cannabinoids are often advocated as a treatment
[01:42.35]for various mental health conditions.
[01:45.26](But) clinicians and consumers need to be aware of the low quality and quantity of evidence..."
[01:55.24]Cannabis is also used for conditions such as nausea, epilepsy and traumatic brain injury.
[02:05.56]The study did not examine its effects on those conditions.
[02:12.12]Degenhardt's team wanted to look at all available evidence for all types of medicinal cannabinoids.
[02:21.16]They investigated whether the substances stopped or lessened symptoms of depression,
[02:27.92]anxiety, attention-deficit hyperactivity disorder (ADHD), Tourette syndrome, PTSD and psychosis.
[02:38.70]They examined 83 published and unpublished studies.
[02:45.12]The research covered about 3,000 people involved in studies between 1980 and 2018.
[02:55.44]They found that medicinal cannabis made psychosis worse.
[03:01.32]And it did not greatly affect any other major results for the mental illnesses studied.
[03:09.96]Tom Freeman is an addiction and mental health expert at Britain's Bath University.
[03:18.12]He was not involved with the study.
[03:21.45]But he said the findings show an important need
[03:25.65]for high-quality tests of medical cannabis to strengthen the evidence.
[03:32.01]I'm Jonathan Evans. 更多聽力請訪問51VOA.COM