Survey respondents believe drug can alleviate various ailments, as scientists call out for more research.
Americans believe marijuana is helpful in treating a variety of health problems despite a lack of available evidence supporting it, a new survey found.
The results, to be published in the upcoming issue of the Annals of Internal Medicine, show the most respondents believe smoking marijuana can help with pain management and then MS. Just under half believe it can relieve insomnia, anxiety and depression, ailments, but some are worried about the efficacy and safety, which has not been established by scientists. This most likely because of the failed drug war.
“They believe things that we have no data for,” said the study’s lead author, Dr Salomeh Keyhani, a professor of general internal medicine at the University of California San Francisco medical school.
In the US, marijuana’s unique legal situation complicates efforts to study and obtain accurate information about the drug’s harms and benefits.
According to the US Drug Enforcement Administration, the agency responsible for drug law enforcement, marijuana is a schedule I drug, meaning that it has serious risks and no medical benefits. Other drugs in this category include heroin and LSD.
This restricted status makes it difficult for scientists to study marijuana, especially its health benefits.
“We need better data,” Keyhani said. “We need any data.”
He attributes the gaps between public perception and proven science largely to commercialization of the drug in several US states, which has led to advertising and media coverage.
To pro-cannabis activists, the lack of traditional research lends credibility to anecdotal evidence, or allows them to point to research on animals or from pre-clinical lab studies not normally used to demonstrated a substance’s medical benefits for humans.
At the same time, marijuana’s schedule I status has lost credibility in recent years. In June, the US Food and Drug Administration (FDA) approved Epidiolex, a first for a drug derived from the marijuana plant. The drug, developed by the UK firm GW Pharmaceuticals, won approval to treat certain severe pediatric epilepsy disorders.
In addition, 31 US states have legalized medical marijuana for a wide variety of illnesses, such as post-traumatic stress disorder, for which there is not medical proof of efficacy. To alleviate the current opioids crisis some states, including New York, are willing to allow anyone prescribed an opioid wide latitude to replace it with medical marijuana.
The survey also found 18% of US adults believe smoking cannabis is somewhat or completely safe for adults. A smaller segment of the population, 7.3% believe it is somewhat or completely safe for children to be exposed to secondhand pot smoke and that marijuana use is safe during pregnancy. These beliefs do not have a basis in mainstream science.
The most common dangers respondents associated with marijuana use were legal problems, addiction and impaired memory.
A recent study in the Lancet claims marijuana does not reduce chronic pain or help replace opioids.
However, a different recent study published in the Journal of Addiction found an association between states which have legalized medical marijuana and a reduction in prescriptions for schedule III opioids. It did not find evidence of drops in prescriptions for more powerful schedule II opioids.
Since direct unproven claims of marijuana’s medical benefits, and assertions such as that a product cures cancer, can lead to unwanted attention from the FDA regulators, cannabis companies have learned to be much more subtle.