Madam, - The study cited in your report headlined "Cannabis linked to schizophrenia" concludes only that it can cite an "association" between psychosis and cannabis; there is "no definite evidence" that cannabis triggers psychosis.
Is it not just as likely that the association between psychosis and cannabis occurs because people who are already feeling some sense of detachment, disconnectedness or sense of unreality may be more inclined to try cannabis (as well as alcohol and other drugs) in the hope of finding something that makes them feel better? - Yours, etc,
TERESA MURRAY, The Locks, Ringsend Road, Dublin 4.