King's College Confirms Institute of Psychiatry Misled Media On Cannabis Brain Study.

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The Institute of Psychiatry at King’s College London issued a press release on 27th November claiming that its latest study shows cannabis causes damage to the corpus callosum.  This was widely reported across the world and many publications extended what was already an inaccurate claim into saying that this “damage” was a cause of psychosis.

As I have already reported and as confirmed by the NHS, the study showed nothing of the sort.  Then, last week, by accident really, I discovered that quietly and with just a small footnote the headline had been changed!

Original: “Study shows white matter damage caused by ‘skunk-like’ cannabis”

Edit: “Study shows white matter damage may be caused by ‘skunk-like’ cannabis”

Professor Shitij Kapur, Executive Dean of the Institute of Psychiatry hadn’t responded to two emails from me, so this time I wrote to the Principal of King’s College, Professor Ed Byrne.  He has now...

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