4 ms·

All that this study shows is that the amount of psychosis and schizophrenia in the population stayed constant. This doesn't in and of itself disprove a link be

All that this study shows is that the amount of psychosis and schizophrenia in the population stayed constant. This doesn't in and of itself disprove a link between cannabis use and schizophrenia, it just disproves the prior hypothesis that a greater percentage of people would develop it.

rhizome 13y ago
Right, during a period in which pot use increased.
- foobarbazqux 13y ago
  Sure, but it's entirely possible the schizophrenia-prone population did not alter their pot usage. Also, if there's a link to the amount consumed, the number of individuals smoking pot at all could have increased while the number of individuals smoking enough pot to trigger psychosis and schizophrenia stayed constant. Wider consumption of alcohol doesn't necessarily correlate with more alcoholism.
  - lolcraft 13y ago
    Yeah, but this population prone to schizophrenia would have: a) to know they're predisposed to this condition; b) to know that weed would worsen it; c) to believe that this effect on schizophrenia would be bad enough to outweigh smoking a joint. Or have another factor linked to schizophrenia that makes them avoid weed. It's possible, in principle, but I think you're stretching it too far. And it's assumed the distribution of smoking per capita didn't change by much. I think that's a good assumption; again, it's possible that what you suggested happened, but it's a bit sketchy.
    - foobarbazqux 13y ago
      Oh, I meant the opposite, that if being schizophrenia-prone made you cannabis-prone (self-medication, effectively), that more people overall smoking pot might not mean that more schizophrenia-prone people were smoking pot, because that population would already be saturated. I'm not saying that my hypotheses are correct, I'm just pointing out that if we're going to be scientific about whether cannabis induces schizophrenia we need to avoid jumping to conclusions.
      - rhizome 13y ago
        you're kind of truther'ing on statistics.
        foobarbazqux 13y ago
        https://en.wikipedia.org/wiki/Lies,_damned_lies,_and_statistics https://en.wikipedia.org/wiki/Lies,_damned_lies,_and_statist...

rhizome 13y ago

Right, during a period in which pot use increased.

foobarbazqux 13y ago
Sure, but it's entirely possible the schizophrenia-prone population did not alter their pot usage. Also, if there's a link to the amount consumed, the number of individuals smoking pot at all could have increased while the number of individuals smoking enough pot to trigger psychosis and schizophrenia stayed constant. Wider consumption of alcohol doesn't necessarily correlate with more alcoholism.
- lolcraft 13y ago
  Yeah, but this population prone to schizophrenia would have: a) to know they're predisposed to this condition; b) to know that weed would worsen it; c) to believe that this effect on schizophrenia would be bad enough to outweigh smoking a joint. Or have another factor linked to schizophrenia that makes them avoid weed. It's possible, in principle, but I think you're stretching it too far. And it's assumed the distribution of smoking per capita didn't change by much. I think that's a good assumption; again, it's possible that what you suggested happened, but it's a bit sketchy.
  - foobarbazqux 13y ago
    Oh, I meant the opposite, that if being schizophrenia-prone made you cannabis-prone (self-medication, effectively), that more people overall smoking pot might not mean that more schizophrenia-prone people were smoking pot, because that population would already be saturated. I'm not saying that my hypotheses are correct, I'm just pointing out that if we're going to be scientific about whether cannabis induces schizophrenia we need to avoid jumping to conclusions.
    - rhizome 13y ago
      you're kind of truther'ing on statistics.
      - foobarbazqux 13y ago
        https://en.wikipedia.org/wiki/Lies,_damned_lies,_and_statistics https://en.wikipedia.org/wiki/Lies,_damned_lies,_and_statist...