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Smoking cannabis makes you lazy, study suggests

Scientists say reduced wilingness to exert themselves may explain why marijuana users do less well in education and work

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Smoking cannabis could make you lazy, according to a new study.

Researchers at the University of British Columbia gave the chemical tetrahydrocannabinol (THC), the main brain-affecting ingredient in cannabis, to laboratory ra ts.

They found this made them less willing to carry out a complex task for a large reward, with most opting for an easier one despite a smaller prize.

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Mason Silveira, who led the study, said: “Perhaps unsurprisingly, we found that when we gave THC to these rats, they basically became cognitively lazy.

“What’s interesting, however, is that their ability to do the difficult challenge was unaffected by THC. The rats could still do the task— they just didn’t want to.”

The type of cannabis sold as a recreational drug contains much higher levels of damaging THC than cannabis produced for medicinal purposes, which has more of a chemical called cannabidiol that is better for the brain.

THC has been linked to anxiety and psychosis, as well as problems with learning, memory and attention.

But the new study suggests that rather than making people less able to complete tasks, cannabis simply makes them less motivated to do so.

The researchers said their findings might explain why cannabis use is linked to poorer education, lower earnings and worse employment prospects.

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Scientists gave 29 rats doses of THC to see whether it made them less likely to opt for tasks that required more effort.

Rats were presented with a choice of levers, with some resulting in low-effort tasks that delivered small food rewards and others leading to high-effort tasks that resulted in big food rewards.

Under normal circumstances, most rats choose a harder challenge to earn a bigger reward. But after being drugged they switched to the easier option.

THC was found to cause changes in the medial prefrontal cortex, a part of the brain involved in in decision-making.

1 /1 Smoking cannabis makes you lazy, study suggests

Smoking cannabis makes you lazy, study suggests

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Scientists say reduced wilingness to exert themselves may explain why marijuana users do less well in education and work

Does Weed Really Make You Lazy?

Tuesday September 6, 2016

M any of those opposing marijuana reform insist that legalization would inevitably lead to a zombie apocalypse of sorts – a nation of lazy stoners who can’t find the motivation to get off the couch and get a job. Though the fear of a lazy stoner society is supported by articles and “research” backing the notion that heavy marijuana use causes laziness (a.k.a “Amotivational Syndrome” or AMS), a closer look at the research shows us that this isn’t necessarily the case.

What is Amotivational Syndrome?

“Amotivational syndrome” is characterized by a diminished desire to achieve goals. It often accompanies feelings of apathy, lethargy and depression. It can make it difficult to feel pride or satisfaction due to a reduction in dopamine production over time.

There is still debate about whether or not AMS is truly a medical condition. Some speculate that heavy marijuana use could lead to AMS while others point out that the occurrence is very rare and occurs with non-users as well, hinting at the possibility of other underlying conditions like depression.

Does Cannabis Cause Amotivational Syndrome?

Early research suggests that chronic, heavy use of marijuana could cause a decline in motivation, but the studies were small and didn’t account for other variables like a predisposition to depression. Nevertheless, opponents of marijuana reform continue to cite these outdated studies as reason enough to avoid legalization.

The U.S. Department of Health and Human Services has written a letter to parents warning of the dangers of youth marijuana consumption stating that young users are more likely to drop out of school and develop AMS. Though the document clearly states that AMS may or may not be caused by cannabis consumption, the assumption that it might is pretty clear.

Even if AMS is real, it only occurs in a handful of situations and those situations are not limited to cannabis consumption. According to a study published in the journal, Psychology of Addictive Behaviors, a survey of 237 college students found that only 5.6% of regular marijuana users developed symptoms of AMS; another 6.2% of non-users and 6.3% of occasional marijuana users also reported symptoms.

Interestingly, many marijuana users claim an increase in life satisfaction after marijuana consumption no matter how “successful” they appear to be. Though marijuana users tend to have lower levels of life satisfaction overall, much of this could be equated to poor health (and thus the need for medical marijuana) and not poor life decisions or a lack of motivation.

In a 2005 study published in BioMed Central, 1300 adults (ages 18 – 81) completed a survey on motivation and life satisfaction. The results showed little difference in motivation levels between marijuana users and non-users. The study did, however, find that daily marijuana users were slightly less likely to satisfied with life, though the difference disappeared when after removing medical marijuana users from the equation. Since medical marijuana patients often report high levels of pain, nausea and other physical difficulties, low life satisfaction among this group is likely due to their medical condition and not their treatment method.

So What Does Cause Amotivational Syndrome?

Assuming that AMS exists, it is likely caused by a number of different things (excessive drug use, eating, or sex, for example). According to Dr. George Simon, AMS is most likely born through addiction. Be it cannabis, pornography or even video games, those who have developed an addiction to instant gratification are more likely to experience symptoms of AMS due to an increased production of dopamine. When dopamine, the “feel good” hormone, is produced with little effort, motivation to accomplish long, drawn-out tasks to achieve the same feeling diminishes.

Unfortunately, excessive use of instant gratification sources can cause a reduction in natural dopamine production, a problem which is exacerbated by the fact that the number of dopamine receptors tends to be reduced when activated too often. To compensate, the user must use more of the substance just to experience the same lift in mood. Thus, it is the cycle of addiction that may cause AMS symptoms, not cannabis itself.

We’ve all heard the lazy stoner stereotype, and some have even gone so far as to give it a medical term. However, the notion that heavy marijuana use could inevitably lead to a clinically significant drop in motivation has been disproven time and time again; chronic cannabis use does not cause a drop in motivation, and the success of the marijuana movement proves it.

Marijuana has been linked to laziness and a lack of motivation, but some doctors suggest it's really Amotivational Syndrome (AMS). Some say excessive marijuana use can cause AMS, but research proves otherwise.