There is no evidence that 10% of cannabis users ‘go mad’

Dr Chris Luke’s contribution to your article ‘Should Cannabis be legalised?’ (Irish Examiner, March 1) raises serious concerns for me.

There is no evidence that 10% of cannabis users ‘go mad’

Many of his claims are unsupported by evidence.

Worse, some of those claims contradict published, peer-reviewed evidence by scientists and doctors.

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