There’s a body of research showing that painkiller abuse and overdose are lower in states with medical marijuana laws. These studies have generally assumed that when medical marijuana is available, pain patients are increasingly choosing pot over powerful and deadly prescription narcotics. But that’s always been just an assumption.
Now a new study, released in the journal Health Affairs, validates these findings by providing clear evidence of a missing link in the causal chain running from medical marijuana to falling overdoses. Ashley and W. David Bradford, a daughter-father pair of researchers at the University of Georgia, scoured the database of all prescription drugs paid for under Medicare Part D from 2010 to 2013.
They found that, in the 17 states with a medical-marijuana law in place by 2013, prescriptions for painkillers and other classes of drugs fell sharply compared with states that did not have a medical-marijuana law. The drops were quite significant: In medical-marijuana states, the average doctor prescribed 265 fewer doses of antidepressants each year, 486 fewer doses of seizure medication, 541 fewer anti-nausea doses and 562 fewer doses of anti-anxiety medication.
But most strikingly, the typical physician in a medical-marijuana state prescribed 1,826 fewer doses of painkillers in a given year.
These conditions are among those for which medical marijuana is most often approved under state laws. So as a sanity check, the Bradfords ran a similar analysis on drug categories that pot typically is not recommended for — blood thinners, anti-viral drugs and antibiotics. And on those drugs, they found no changes in prescribing patterns after the passage of marijuana laws.
“This provides strong evidence that the observed shifts in prescribing patterns were in fact due to the passage of the medical marijuana laws,” they write.
In a news release, lead author Ashley Bradford wrote, “The results suggest people are really using marijuana as medicine and not just using it for recreational purposes.”
One interesting wrinkle in the data is glaucoma, for which there was a small increase in demand for traditional drugs in medical-marijuana states. It’s routinely listed as an approved condition under medical-marijuana laws, and studies have shown that marijuana provides some degree of temporary relief for its symptoms.
The Bradfords hypothesize that the short duration of the glaucoma relief provided by marijuana — roughly an hour or so — may actually stimulate more demand in traditional glaucoma medications. Glaucoma patients may experience some short-term relief from marijuana, which may prompt them to seek other, robust treatment options from their doctors.
The tanking numbers for painkiller prescriptions in medical marijuana states are likely to cause some concern among pharmaceutical companies. These companies have long been at the forefront of opposition to marijuana reform, funding research by anti-pot academics and funneling dollars to groups, such as the Community Anti-Drug Coalitions of America, that oppose marijuana legalization.
Pharmaceutical companies that manufacture or distribute highly addictive pain pills have hired dozens of officials from the top levels of the Drug Enforcement Administration during the past decade, according to a Washington Post investigation.
The hires came after the DEA launched an aggressive campaign to curb a rising opioid epidemic that has resulted in thousands of overdose deaths each year. In 2005, the DEA began to crack down on companies that were distributing inordinate numbers of pills such as oxycodone to pain-management clinics and pharmacies around the country.
Since then, the pharmaceutical companies and law firms that represent them have hired at least 42 officials from the DEA — 31 of them directly from the division responsible for regulating the industry, according to work histories compiled by The Post and interviews with current and former agency officials.
The number of hires has prompted some current and former government officials to ask whether the companies raided the division to hire away DEA officials who were architects of the agency’s enforcement campaign or were most responsible for enforcing the laws the firms were accused of violating.
“The number of employees recruited from that division points to a deliberate strategy by the pharmaceutical industry to hire people who are the biggest headaches for them,” said John Carnevale, former director of planning for the White House’s Office of National Drug Control Policy, who now runs a consulting firm. “These people understand how DEA operates, the culture around diversion and DEA’s goals, and they can advise their clients how to stay within the guidelines.”
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