Do depressed lab rats dictate international drug policy?
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FAR OUT 088: Rat Heaven
Do depressed lab rats dictate international drug policy?
The predominant model of drug addiction views it as a disease: humans and animals will use drugs like heroin or cocaine for as long as they are available. When they run out they will seek a fresh supply and continue: the drugs, not the users, are in control.
These conclusions, repeated regularly by politicians and the media, are based on experiments carried out almost exclusively on animals, usually rats and monkeys, housed in stark metal cages and experiencing a particularly poor quality of life. What would happen, wondered psychologist Dr. Bruce Alexander, then of British Columbia’s Simon Fraser University, if these animals were instead provided with a comfortable, stimulating environment?
In 1981 Alexander built a 656 sq. ft. (61 m2) home for lab rats. Dubbed Rat Park, it was kept clean and temperate, while the rats were supplied with plenty of food and toys, along with places to dig, rest and mate. Alexander even painted the walls with a soothing natural backdrop of lakes and trees. He then installed two drips, one containing a morphine solution, the other plain water. This was rat heaven: but would happy rats develop morphine habits?
Try as he might, Alexander could not make junkies out of his rats. Even after being force-fed morphine for two months, when given the option, they chose plain water, despite experiencing mild withdrawal symptoms. He even laced the morphine with sugar, but still they ignored it. Only when he added Naloxone, an opiate inhibitor, to the sugared morphine water, did the Rat Parkers drink it. Alexander simultaneously monitored rats kept in “normal” laboratory conditions (i.e. small cages): they consistently chose the morphine drip over plain water, sometimes consuming 16–20 times more than their luckier colleagues.
Alexander’s findings — that deprived rats seek solace in opiates, while contented rats avoid them — dramatically contradict our currently held beliefs about addiction. So, how might society benefit if his results were applied to human drug addicts? Nobody seemed to care. Rejected by Science and Nature, Alexander’s paper was published in the obscure Pharmacology, Biochemistry and Behavior, where it was summarily ignored.
Two decades later Rat Park sits empty; addiction remains a “disease” and the ludicrous War on Drugs continues, with no end in sight.