We Have To Talk About Weed

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Kurzgesagt – In a Nutshell
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Video Transcript:
Cannabis has been vilified to a  ridiculous degree for the last century, but it's now finally being decriminalised in more and more places around the world – it’s  just recently been legalized in Germany. And for very good reasons! Compared to  legal drugs like alcohol – which will cause one in twenty deaths just this  year, cannabis is pretty mild.
So to justify harsh prosecution and punishment, its  negative effects have been wildly overstated. Naturally there was a lot of pushback and  here something went wrong. If you’ve followed the discourse over the last few years, you might  have got the impression that weed has almost only upsides and few, if any, negative side effects. 
We ourselves contributed to that narrative. What made this worse is that criminalization made  it very hard for scientists to study cannabis, especially its long term effects.  They faced bureaucratic and legal hurdles and studies often had  to rely on small sample sizes.
In the last few years this  finally started to change, so it is time to bring new evidence to the  discussion. And well, it's not pretty. While weed is still much less harmful than alcohol,  it does have a dark side.
It is more addictive than we thought and can have significant  negative effects if you use it long term. It seems that…ehm, what are you doing? Before you tell us how dumb we are, please  watch the video.
To be crystal clear, we think prohibition doesn’t work and  Cannabis should be legal. But this also means that we need to treat it as what it is:  A drug. With unique upsides and downsides.
So let’s take an honest look at some  of the latest research together. Weed is getting stronger and stronger Cannabis’s magic juice is Tetrahydrocannabinol, THC. It docks on your cannabinoid receptors,  which affects various brain functions.
THC activates some regions and calms down others,  creating a fun cocktail of sensations. The more THC, the more intense the high.  And people seem to be into higher highs, or at least this is what the market is providing. 
In the US, Canada and in Europe the concentration of THC in legal and illegal Cannabis products has  more than doubled in the last few decades. While ever more potent strains are bred, products like  edibles or concentrates with more than 60% THC have become increasingly common. While the share  of products with less than 15% THC has declined.
Unfortunately just about every problem weed  creates gets worse at higher THC doses. At the same time more and more people use weed.  In the US more people consumed cannabis daily than alcohol for the first time in 2022.
In  Canada 26% of people 16 and older use it, up from 22% in 2018. It is not possible to say  if legalization is the reason for this though, since studies are pretty inconsistent and vary  massively between different users. In some, consumption went up, in others it stayed  stable – and the trend to use more weed began in the early 90s and sped up in  the 2000s, way earlier than legalization.
So today more people consume more weed  than ever before in the last century and it is the strongest it’s ever been.  What are we seeing as a result of this? Let’s start with something that used to  get you laughed out of the room: Addiction.
Weed Addiction And Withdrawal Symptoms A big narrative about weed  is that it is not addictive, or at least not that big of a deal.  And for most people this is true. Studies clearly show that the majority  handle it well – For 8 out of 10 using weed, it is just a casual high  and not problematic at all.
About 2 in 10 users develop a cannabis use  disorder, or CUD. CUD has 11 different symptoms, from the inability to stop when you’ve  had enough, to using it when you know it will have negative consequences, to tolerance and  withdrawal. They can all basically be reduced to: You are doing it too often, even if it's bad  for you and it is less fun than it could be.
There are three major risk factors here: The  amount of THC, how often you consume and your age when you start using cannabis. The more THC, the  more often and the younger you are when you start, the higher your risk. If you smoke too much  weed, too often, it will have negative impacts on your life.
So if this is you, toning  it down a bit will make a big difference. 1 in 10 users develops a serious addiction.  They usually consume daily and their life is significantly impaired or held  back – because they spend a lot of their time either using or recovering  from cannabis use.
Since their brain is building a tolerance they need increasingly  high doses or stronger weed, often both. Studies found a variety of negative effects: Heavy  users can experience bad moods, feel irritable, restless, paranoid, anxious and even  depressive. In a sad twist of irony, for many addicts it feels like they need weed  to fight these symptoms – maybe it did actually help at first – while in reality, it makes  those symptoms stronger and more persistent.
Studies also found that loneliness and frequent  cannabis use go hand in hand. If you feel lonely you are more likely to use weed and if you use  weed you may experience more loneliness. It is not always easy to say which came first,  but they seem to reinforce each other.
So, on the one hand, cannabis makes loneliness  feel much less bad. On the other hand, it can also make you feel more socially awkward  than you actually are and withdraw from friends. This can lead to a downward spiral that ends  in self isolation and chronic loneliness.
Another thing many people who consume a lot  experience is a mental numbness that makes boredom feel ok because it impacts the  reward system of your brain. Not great, but good enough. You can spend your days  killing time, bingeing mildly interesting stuff.
Being numb rather than having fun. Boredom  is a signal to your mind to get creative or learn something new, but this is suppressed. This  also makes quitting so much harder, because your daily routines suddenly seem boring and  unexciting, making it very tempting to go back.
If you find yourself using constantly, this  can also stunt your development as a person. The numbness dulls bad feelings, making it easy  not to deal with them. But in life you can only get over bad feelings if you actually feel  them and you have to process them to grow.
Lastly, let us talk about physical withdrawal  symptoms – the more you consume the worse they will be for you, especially if you use  daily. Withdrawal can cause headaches, sweating or chills, decreased appetite, in severe  cases even fever, nausea and abdominal pain. You might have trouble falling asleep and if you do,  you might have disturbing and vivid dreams.
The withdrawal can put you in a depressive mood  where life feels daft and pointless. You can feel restless, angry, anxious or nervous.  You may feel unable to do anything at all.
After a few days these symptoms will begin to  subside and after a few weeks they will be gone entirely – the exact time depends on how much  and how long you have been consuming cannabis. Now let’s get to the worst part. Weed May Damage Your Brain This section was not fun to research because  there is fierce debate among researchers how bad weed is for your brain, and whether  it has irreversible long term consequences or not.
There is no consensus yet and  it's hard to say anything definitive. Having said that, THC directly interferes  with critical brain chemistry. There is some evidence that it may alter  its structure.
If it does, this may go away again if you quit after  a few years. Or not. We don’t know yet.
The consequences vary a lot between individuals  but especially for heavy users they have a variety of potentially unfunny downsides:  The most common one is that your memory gets significantly worse. Sustained heavy use may  reduce your ability to learn, your reasoning, perception, attention span, decision making,  language abilities and impulse control. Most negative effects seem to go away or at  least weaken over time after you quit, but again we simply don’t know  enough and need more research.
Where the evidence is much clearer  is that consuming a lot of weed is really bad for teenagers on multiple  levels. If you start using heavily, early, you have many more years to  build up potentially negative side effects. Teens who use a lot are much  more likely to become addicted to weed.
This may just be correlation and  weed may not be the underlying cause, but heavy weed users are more likely to  perform poorly in school and less likely to finish their education. They are on average  less satisfied with their life and what they achieved. This may simply be because if  your memory and motivation are stunted, you have fewer interesting experiences  and forget the ones you do have.
And there is strong evidence that teens users  are way more likely to develop mental health issues like psychosis, schizophrenia, depression  or anxiety later in life. Once again, the younger you start, the higher the risk – and it also  seems to rise massively with high THC doses, making highly potent cannabis products even more  dangerous for teens. Ok let’s wrap this up.
We’ve only focused on the negative sides in this video,  that was the whole point. As we said before, for most people weed in moderation is totally  fine and definitely way less harmful than alcohol. You do you, we are not your parents.
The upside  of moderation is also that when you do it, your experience will be more intense and special. But for teens, weed, especially using it  regularly or a lot of it, is a bad idea, with potentially life changing consequences.  We know that criminalization did nothing to make this better.
We now have a new chance under  legalization. It begins with being open and honest about the state of science and acknowledging that  weed is one drug among many others. Certainly not the worst one by a long shot.
But also problematic  for at least 1 to 3 out of ten people using it. If you really have to try cannabis,  there is a time and place – and that is in your twenties. If you are  younger, the science is clear: Don’t do it.
At least not yet. You’ll  have plenty of time to experiment later. Let’s do a different experiment now! 
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