Results 1 to 15 of 15

Thread: What the...? "Serial coffee drinkers hallucinate "

  1. #1
    Senior Member flynnaus's Avatar
    Join Date
    May 2008
    Location
    Sydney
    Posts
    4,028

    What the...? "Serial coffee drinkers hallucinate "

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Serial coffee drinkers hallucinate

    Serial coffee drinkers are more likely to have hallucinations or feel the presence of dead people, new research shows.

    The UK-based study quizzed 200 students on their caffeine intake and found those with the highest consumption were also more prone to report seeing or hearing things that were not there.

    Those who consumed a daily equivalent of seven cups of instant coffee or more - high caffeine users - were three times more likely to have extra-sensory experiences than low users, who had less than one cup daily.

    The Durham University study took in all caffeine consumption including coffee but also tea, caffeinated energy drinks or chocolate bars and caffeine pills.
    ...etc


  2. #2
    Sleep is overrated Thundergod's Avatar
    Join Date
    Jul 2006
    Location
    Sydney
    Posts
    10,496

    Re: What the...? "Serial coffee drinkers hallucinate "

    Maybe people that see dead people, drink more coffee, not the other way around.

  3. #3
    Site Sponsor
    Join Date
    Jun 2006
    Posts
    257

    Re: What the...? "Serial coffee drinkers hallucinate "

    I think its more the case of what other drugs then caffeine they are taking....

  4. #4
    Senior Member
    Join Date
    Nov 2004
    Posts
    309

    Re: What the...? "Serial coffee drinkers hallucinate "

    Quote Originally Posted by 53594C5B5B544046350 link=1231908433/0#0 date=1231908433
    Those who consumed a daily equivalent of seven cups of instant coffee or more
    Whew! Thank goodness I dont drink instant. ;)

  5. #5
    Senior Member
    Join Date
    Nov 2008
    Posts
    361

    Re: What the...? "Serial coffee drinkers hallucinate "

    letts see what the results are with 10,000 people. 200 aint nearly enough!!!

  6. #6
    Senior Member
    Join Date
    Sep 2006
    Posts
    580

    Re: What the...? "Serial coffee drinkers hallucinate "

    they quized what? 200 students! and would they be chemistry students by any chance with access to making meth amphetamines etc.... Im doing more than 7 cups of real coffee a day not that instant crap, then again that could be where the real problem lies; "what exactly is in instant coffee?" that is the question..... mwa ha ha ha ha ha its a conspiracy thats what it is...
    I need another hit of blue horse, in fact im going to do just that ciou for now.

    Ray. (i see dead people) shhhhhhh. :-X

  7. #7
    Junior Member
    Join Date
    Jan 2009
    Posts
    22

    Re: What the...? "Serial coffee drinkers hallucinate "

    They must have gave those students instant Columbian coffee.

  8. #8
    A_M
    A_M is offline
    Guest
    Join Date
    Mar 2006
    Posts
    6,381

    Re: What the...? "Serial coffee drinkers hallucinate "

    Quote Originally Posted by 6E7E6F7C6A73641D0 link=1231908433/6#6 date=1231913383
    They must have gave those students instant Columbian coffee.
    Yea with the white additive... :o

  9. #9
    Junior Member
    Join Date
    Jan 2009
    Posts
    22

    Re: What the...? "Serial coffee drinkers hallucinate "

    Haha!
    And in further news...
    The volunteer students are volunteering their services again to confirm the results of the test.


  10. #10
    Senior Member
    Join Date
    Jul 2008
    Location
    Blue Mountains
    Posts
    136

    Re: What the...? "Serial coffee drinkers hallucinate "

    Maybe the Dead people miss drinking coffee, and they just look over my shoulder and think "Jebus thats a good looking cup of coffee" and jebus agrees.

  11. #11
    Senior Member Pavoniboy's Avatar
    Join Date
    Jan 2009
    Location
    Minnamurra NSW
    Posts
    693

    Re: What the...? "Serial coffee drinkers hallucinate "

    Instant coffee says it all. If their taste buds are that far gone, its no surprise their eyes are shot as well.

  12. #12
    Junior Member
    Join Date
    Dec 2008
    Posts
    16

    Seven Cups of Coffee a Day May Lead to Hallucinations

    http://www.bloomberg.com/apps/news?pid=20601124&sid=a9S5gzERwwQE&refer=home

  13. #13
    Sleep is overrated Thundergod's Avatar
    Join Date
    Jul 2006
    Location
    Sydney
    Posts
    10,496

    Re: Seven Cups of Coffee a Day May Lead to Hallucinations

    Doesnt mention body weight.

  14. #14
    Senior Member Stan's Avatar
    Join Date
    Dec 2007
    Location
    Just North of Brisbane
    Posts
    943

    Re: What the...? "Serial coffee drinkers hallucinate "

    If this was a fact many people would save a lot of money on the street. Maybe there is an illicit market for coffee. [smiley=evil.gif] [smiley=evil.gif]

  15. #15
    b
    b is offline
    Member
    Join Date
    Aug 2008
    Posts
    76

    Re: What the...? "Serial coffee drinkers hallucinate "

    Behmor Brazen - $249 - Free Freight
    Skewering, but a bit serious. Maybe Ben needs access to a better office coffee machine.
    Bad Science: The things you can perk up with a cup of coffee
    from Guardian Unlimited Science by Ben Goldacre

    Danger from just seven cups of coffee a day," said the Daily Express on Wednesday. "Too much coffee can make you hallucinate and sense dead people, say sleep experts. The equivalent of just seven cups of instant coffee a day is enough to trigger the weird responses." The story appeared in almost every national newspaper.

    This was weak observational data. Thats just the start of our story, but you should know exactly what the researchers did. They sent an email inviting students to fill out an online survey, and 219 agreed.

    The survey is still online (in all its time-consuming glory, I just clicked answers randomly to see the next question). It asks about caffeine intake in vast detail, and then uses one scale to measure how prone you are to feeling persecuted, and uses another, the Launay-Slade Hallucination Scale (LSHS), 16 questions designed to measure "predisposition to hallucination-like experiences".

    Some of these questions are about having hallucinations and seeing ghosts, but some really are a very long way from there. Heavy coffee drinkers could have got higher scores on this scale by responding positively to questions like: "No matter how hard I try to concentrate on my work, unrelated thoughts always creep into my mind"; "Sometimes a passing thought will seem so real that it frightens me"; or "Sometimes my thoughts seem as real as actual events in my life". Thats not seeing ghosts or hearing voices.

    There could have been alternative explanations for the observed correlation between caffeine intake and very slightly higher LSHS scores. Maybe some students who drink a lot of coffee are also sleep deprived, and marginally more prone to hallucinations because of that. Maybe they are drinking coffee to help them get over last nights marijuana hangover. Maybe people who take drugs instrumentally to have fun and distort their perceptions also take drugs like caffeine instrumentally to stay alert. You can think of more, Im sure. The researchers were keen to point out this shortcoming in their paper. The Express and many others didnt seem to care.

    If you read the academic paper you find that the associations reported are weak. For the benefit of those who understand "regression" (and it makes anybodys head hurt), 18% of the variance in the LSHS score is explained by gender, age and stress. When you add in caffeine, 21% of the variance in the LSHS score is explained: only an extra 3%, so caffeine adds very little. The finding is statistically significant, as the researchers point out, so it is unlikely to be due to chance, but the fact is that its still weak, it explains only a tiny amount of the overall variance in scores on the "predisposed-to-hallucinations" scale.

    Lastly, most newspapers reported a rather dramatic claim, that seven cups of coffee a day is associated with a three times higher prevalence of hallucinations. This figure does not appear in the paper. It seems to be an ad hoc calculation done afterwards by the researchers, and put into the press release, so you cannot tell you how they did it, or whether they controlled appropriately for problems in the data, like something called "multiple comparisons".

    Here is the problem. Apparently this three times greater risk is for the top 10% of caffeine consumers, compared with the bottom 10%. They say that heavy caffeine drinkers were three times more likely to have answered affirmatively to just one LSHS question: "In the past, I have had the experience of hearing a persons voice and then found that no one was there."

    Now this poses massive problems. Imagine that I am stood facing a barn, holding a machine gun, blindfolded, firing off shots whilst swinging my whole body from side to side and laughing maniacally. I then walk up to the barn, find three bullet holes which happen to be very close together, and draw a target around them, claiming I am an excellent shot.

    You can easily find patterns in your data once its collected. Why choose 10% as your cut-off? Why not the top and bottom quarters? Maybe they have accounted for this problem. You dont know, I dont know, they say they have, to me, in emails, but it wasnt in the paper, we cant all see the details. I dont think thats satisfactory for a headline finding, and the first claim of a press release.

    There is another problem: putting a finding in the press release but not into the paper is a subversion of the peer review process. People will read this coverage, they will be scared, and they will change their behaviour. But the researchers key reported claim, with massive popular impact, was never peer reviewed, and crucially the technical details behind it are not in the public domain.

    Im sorry to see academics not blameless in this dreary situation.



Similar Threads

  1. "Cuppers", "Baristas" and two ends of the beast ...
    By luca in forum General Coffee Related...
    Replies: 0
    Last Post: 6th September 2009, 02:03 PM
  2. ASCASO "I MINI" or "ROCKY"
    By bally in forum Grinders
    Replies: 5
    Last Post: 10th June 2009, 10:27 PM
  3. "Black" OR "Chrome Professional Grinder"
    By trumboli in forum Grinders
    Replies: 2
    Last Post: 28th January 2008, 12:52 AM
  4. Suggestions for "Interesting" or "Bright" beans?
    By NewToEspresso in forum Cup Tasting Room
    Replies: 16
    Last Post: 9th January 2008, 02:30 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •