Study: Everyone Prefers Low-Dose Cannabis Edibles — Even Mice

Super-strength cannabis edibles have a small but passionate legion of
defenders. In certain cases, for instance, there is a wholly valid medical
justification for a 1000-milligram brownie — but the truth is,
marijuana-laced goodies are not for everyone and low-dose edibles seem to
reign for those who partake.

And this is particularly true at high doses.

Whenever “extreme adverse effects” result from cannabis, it seems an edible
(or a plateful of them) is involved. This is why most states with legalized
adult-use cannabis have passed laws limiting the amount of THC in edibles,
and why these limits haven’t been overturned.

It turns out preferring a mild buzz to a days-long, edible-triggered,
near-psychedelic odyssey may be wired into our brains. Because as
researchers at Indiana University and Purdue University recently found,
this preference appears to be *absolutely* wired into the brains of mice.

In a study, results of which were published in the journal Drug and Alcohol
Dependence, researchers at the Department of Psychology and Indiana Alcohol
Research Center, Indiana University – Purdue University in Indianapolis fed
a cohort of mice dough infused with THC, in variable amounts.
Know Thy Limits

Doses in the dough ranged from 1 milligram of THC per kilogram of
bodyweight to up to 10 milligrams of THC per kilogram. The mice also had
access to “normal” food and water, which suggests they were not attacking
the dough out of hunger. (For comparison’s sake: a 180-pound man would be
eating an edible with roughly 800 milligrams of THC were he to match the
mightiest mouse dough.)

The mice ate the dough — as lab mice are wont to do — but the more powerful
the dough, the less the mice ate, researchers found. When the dough was at
5 mg/kg or 10 mg/kg, some of the mice ate “significantly less” than 100%,
suggesting there was something in that dough that disagreed with the mice.

“The simple fact that mice self-administered THC dough could be seen as
evidence that it is rewarding,” the researchers wrote. “However, inspection
of consumption patterns indicates that THC might have been aversive at
higher dose.”

But not every mouse shied away from the highest-strength dough. Some mice
ate it all, no matter how strong. After eating the dough, effects included
less movement and a decrease in body temperature — you know, typical stoned
mice things. Interestingly, the impact was most pronounced in the male
mice, the researchers found.

The study “demonstrated what appears to be THC-induced conditioned taste
aversion,” the researchers wrote, adding that the mice did not appear to be
stressed and were otherwise perfectly fine, if very blazed.

The study is notable for a few reasons. There is limited scientific data on
self-administration of THC, even among animals. And since there are still
legal and “ethical” barriers to performing such experiments on humans, as
the researchers noted, mice — who, like rats, provide something of a
yardstick for understanding biology and functions like the immune system in
humans — are the next-best option. And this study is one of few where an
animal subject had access to self-administered THC at all, meaning it’s one
of the few where desire for THC could be gauged.

It’s neither accurate nor fair to say that edibles are a liability. But
among the problems that have arisen during the cannabis legalization era,
powerful edibles — and eating too much of them — has absolutely been one of
the marijuana movement’s biggest challenges.

The good news is that edibles are relatively easy to manage, because this
is what labeling is for. And if you are a human who prefers a microdose to
a heroic macro-brownie, just know that you are not alone in the animal
kingdom.

The post Study: Everyone Prefers Low-Dose Cannabis Edibles — Even Mice
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