Readers speak up on bogus articles. YOUR article on the legal high masquerading as ‘Super Skunk’ for sale on BurtonMarket was interesting.

Mankind has used cannabis safely for more than 5,000 years and it is a dangerous by-product of prohibition that such chemical substitutes are being created.

You said: ‘The long-termeffects of smoking cannabis include paranoia, schizophrenia and mental health problems.’ This just isn't true.

This is the science of the DailyMail and the sort of propaganda that keeps prohibition in force, even though it makes no sense and costs us billions.

Certainly cannabis can produce transient effects of paranoia, but all the experts agree there is no certainty about mental health problems at all.

The very latest meta-analysis of all published research shows that the risk of just an association between cannabis use and psychosis is at worst 0.013 per cent and possibly as little as 0.0030 per cent.

Cannabis is hundreds of times safer than alcohol and thousands of times safer than tobacco.

The only reason it remains prohibited and our police officers waste so much time going after it is that the alcohol and tobacco companies tell our politicians what to do.

Of course, we have no idea at all how dangerous the legal high is yet—it's freely available. Such is the idiocy of our present law.