The 20 Most Dangerous Drugs

The 20 Most Dangerous Drugs

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A team of leading scientists have spent two years analysing the effects of 20 of Britain's most widely used drugs, and have devised a scientifically rigorous - and controversial - new ranking for them.

The BBC's Horizon programme has followed their research and looks at the science behind the headlines.

How do the brain and body react to each stimulant as it passes into the bloodstream, and what are the long-term effects of drugs relative to their classification?

If the current classification should be changed in view of the latest findings, what exactly is Britain's most dangerous drug?

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220   Comments / Reviews

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  1. I saw this documentary when first aired. It reported on a properly independent scientific study commissioned by the BBC.

    (As I recall, it too listed Heroin as #1 — alcohol as #4 — and cannibas as #11. (Note: Also as recalled: everything after 8 or 9 didn’t really seem to matter much.)

    It should be shown again and regularly.

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  2. Does anyone know what happened to the doc? It does not seem to be here anymore :(

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  3. i cant see the uk study to be true...i feel like most of the uk the study is full of s*it

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  4. see cannabis on the thumbnail
    nope.

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  5. please sent me list of dangerous drug

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  6. Alcohol is one of the most dangerous drugs lol. Have had countless years on this "most dangerous drug" and will have countless more.

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  7. Hemp can be used for making clothes. Do not discount the advantages of such natural gifts.
    If we focused more on natural remedies the earth would not be in such a state of depletion and extinction.

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  8. I'm used to read, watch and listen lots of technical science stuff and this if this was "NAME OF SCIENCE" I quit. There was so much lag of results, given information and facts. They didn't even know how many users of some drugs have.

    I have never hear about straight cannabis dead. If we get that line, we need to criminalize boring movies, becouse if you fell sleep becouse of the movie and you were cooking. Oh no.

    I loved that Men Who Stare at Goats moment with the army dudes.

    Read other comments below and make yourself happy that you never saw this. And remember that poisons are bad. For real xD

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  9. %100 of canabis users realize that social perceptions of it's harm are GREATLY exagerated.

    This documentary undermines any semblence of credibility and is irrelevent.

    I wished someone at some point during this documentary had stated the obvious...." Ironically, even after 50 years, we still really don''t know the long term effects of most of these drugs."

    This 'science' has been, and continues to be co-opted by politics. There was not a single mention of percieved positive effect. These researchers should be ashamed of themselves. Pure and simple.

    What a pile of horse shite.

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  10. I think that is a very good point to make that all drugs have some degree of inherent risk associated with them, some more than others. But there are also inherent dangers associated with many of our daily activities, its just that they have not been branded 'illegal' so you give it no thought; as an example every time you get behind the wheel of a car (or just in a car/bus/taxi/etc.) you run a risk (more people die in car accidents than are killed by 'illegal' drugs each year), but the risk is accepted and you use the car to get places, just like people who use drugs use them to get 'places' and people who drink use that to get 'places'.

    Now if drugs were legal and regulated much of the inherent risk associated with them would be greatly reduced (i.e. impure/cut with dangerous chemicals/not the expected 'product'), its would also deal a blow to criminals who used drugs as a revenue stream and people could be properly educated regarding drugs, their usage, dangers and so on; rather than be left to find out for themselves and possibly make a life threatening decision rather than an informed one.

    There is more, I could go on, but I think you can see where I stand, I just don't see how its anybody in governments business what substances I or anyone else decide to put in their body.

    -------------------------------------------------------------------------------------------

    “If people let the government decide what foods they eat and what medicines they take, their bodies will soon be in as a sorry state as the souls who live under tyranny.”
    ? Thomas Jefferson

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  11. i love when the army men take lsd, and oh no their not wanting to kill others they want to laugh and climb trees

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  12. lies, half truths, missunformation and lies, you believe 'em all, you swallow 'em all, lies, half truths missunformation and lies, you can control heroine, the problem is culture that convinced people with this kind of sh?t that something like so isn't possible break this cycle getting informed not stoned. Pot is not at all that bad, and depending on the kind can be healthy besides vaporizators are the best and healthier way to do weed.
    A date: a fruit have at least more than 200 hundred chemicals in and on it,
    -How can someone be so blind? we are exposed to chemicals every minute of our lives, when driving or waiting for the bus, when out at rushhours............

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  13. How are the Drugs dangerous if they have never caused a death? Also where did they get there information because there are alot and i mean ALOT of actual published scientific documents that disprove alot of their statemants.

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  14. I actually agree on placing cannabis that high up. I myself have smoked since i was a bit over 15, and i am now 19, and have not become "a stupid stoner" yet; I do well at school, i play in a pretty groovy band, have a really cute girlfriend, and a whole lot of good friends (and no; They don't all smoke). Now, I have not f--ked up, but; They guy who introduced me and my friends to weed have f--ked up, and all of his friends with him, and at least 4 of the people that I have introduced to smoking, have really f--ked up as well. I have witnessed myself how a handful of smart and clever people, have become a bunch of idiots smoking the day away. One of them now does GHB almost every weekend, and Valium on a daily basis.

    But hey, by all means, pot is great, but you gotta be careful. It's not harmless.

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  15. most of these drugs on here are listed high simply because of the effects on the body they give, getting heart attacks or similar does not count towards overdose of heroine for example, which is why all these death rates are rated low on this documentary.

    also sice this documentary has been out, users and street prices have raised by a significant amount, some almost doubled.

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  16. ecstasy isn't cut with rat poison are you r*tarded? MDMA is harmless in pure form... the only reason anyone has any negative side effects from E is because of the **** people cut the MDMA with.. usually amphetamines... which in that case its the amphetamines causing harm not mdma... and marijuana is super addictive almost every swinging d*ck who tries it because a r*tarded stoner... the majority of the people responding to this video don't understand the 3 basis of the arguments for the danger of the drug...

    for example, tobacco kills millions yes.. and the most... yet smoking a single cigarette is nearly harmless... you usually smoke millions of them before you actually die from them... if you did millions of lines of cocaine... you'd have died millions of lines ago... heroin is so easily overdosed on... compared to alcohol... plus you must remind yourself percentages of mortality of users vs how many use... alcohol and tobacco have way more users... if you had the same amount of users of alcohol and tobacco as you have heroin... well heroin would be number 1...

    Leave it to a bunch of druggies to over analyze scientific data and get all up in arms because they show proof of negatives of their drug of choice.. or lead their misguided mind astray.

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  17. Ive never heard so much crap about drugs in my life. If anyone thinks through this information objectively, these professionals know nothing about addiction. But I am not a valid source either as I was a drug addict for many many years, yet I beleive a drug addict is a pure knowledge base of the dangers of all drugs. Heroin number 1? pfffttt... if that's true, may my tracks dissapear. Looks at Portugal, the Netherlands and see how many die in comparrison to legal drugs.

    btw, because I am not from England I am amazed at the prices I was seeing. Is that right? If they are, my god you people have it cheap. Even at the exchange rate now, you pay $10 to $20 pounds for a bag of Heroin? We pay $50 for point one of a gram. Some people pay upto $1600 for 3.5 grams.

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  18. Everyone know this propaganda crap
    40 thousand people die a year from alcohol more people die from alcohol than suicide all the illegal drugs put together, even the goverment actively encourage people to drink it, nice.

    Tobbaco kills more than alcohol, all drugs,car crashes homicide and sucide put togther. 50% of thoes who smoke will die from its effects.

    How can ectasy be safe if its been cut with rat poison ? it doesnt mention this in the documentary.

    And Coulten Hansen not all Brits are stupid, So stupid we know you work at Bread Garden Market & Bakery went to Iowa City High School and it says here you like football ? Dude this is the BBC, its not the British opinion dont insult people when you have all your personal information avaiable for all to see you donut!

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  19. stupid brits you put cannabis at 11????? over steroids??? ex **** dude ppl die from ex NO ONE DIES FROM CANNABIS END OF STORY!!! no harm only help to the body helps the brain the one thing that it sort of hurts the lungs it has been proven to help with lung cancer!!! this doc is total bull!!

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  20. i love rupert grint yay yay

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  21. john kay is da best dwug twaker eva lol lol lol lol lol sacarasm

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  22. screw this list lets bstart a new list what drugs have you tried and who wants to pARTY lol : weed hash oil booze beer exctasy mda coke crack lsd opium (i think in hash 1x) oxy and K? (with some hot chick - i got so messed up i forgot to boiing)

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  23. LSD could do more damage to the brain stem than THC, but LSD is so man made that it is virtually impossible to become addicted to, as I understand.

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  24. are you kidding me, cannabis is a worse drug than X and LSD? WTF

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  25. Having marijuana and any psychedelic on a list of dangerous drugs is laughable. One can argue that excessive recreational use is not ideal, but dangerous? Sounds like more of the idiotic propaganda that fuels the "war on drugs" in America. Don't take my word for it. Look into studies on marijuana health benefits or studies related to psychedelics.

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