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Letter: Heavy smoking

Published 9 March 2005

From Randy Gregg

In your report on marijuana causing headrushes (12 February, p 17), the author notes that after a month of observed non-smoking in a clinic, there was no improvement in people who smoked more than 78 joints a week on average. I know a lot of people who smoke cannabis, but I have never known of anyone smoking 78 joints a week.

This reminds me of the study by Robert Heath in the US in 1974. Heath made rhesus monkeys smoke the equivalent of 63 joints in 5 minutes in a gas mask so they would not lose any of the smoke. They suffocated and some died. So the government proclaimed “cannabis kills brain cells”, which it may. We unfortunately still don’t know because of the lack of credible studies. Instead, we get studies funded by political groups with their own agenda.

Rochester Hills, Michigan, US

Issue no. 2490 published 12 March 2005

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