High time that we relaxed the rules on cannabis use

One of the wisdoms of our healthcare system is its evidence-based approach to the use of medicines, which also helps make rational decisions on health economics (Javid announces review into use of medicinal cannabis, 20 June). However, the evidence we aspire to is high-quality, randomised controlled trials of medicines in large groups. Cannabis has been used beneficially by so many people to alleviate symptoms, but not in a reported and controlled way, so the level of evidence is that of anecdotal reports, which constitutes low-level evidence. Its legal status makes it difficult for manufacturers to conduct trials and some potential medicines have not reached the market, partly due to insufficient numbers and partly because clearly it doesn’t work for everyone.

Pharmacogenetics and the myriad active ingredients of herbal cannabis can account for some of these differences. It would seem the most sensible and efficient way forward would be to allow exceptional use medicinally where a person can be seen to benefit and a doctor who knows them is willing to prescribe. The regulators and legal guardians of our safety must continue to work in our best interests, but surely shouldn’t be too frightened to allow exceptions where it’s in a person’s best interests. All medicines can be dangerous when used incorrectly and cannabis is less dangerous than many.
Margaret Gibbs
Bromley, Kent

• William Hague wants to legalise recreational cannabis. How about making it odourless first. If your neighbour is a skunk smoker, the offensively sickening smell can permeate windows and walls, seep in through floorboards and cling to clothes. Any bus or tube carriage stinks when a passenger is a skunk smoker. It’s in everybody’s interest for the development of an odourless weed.

However, at least we now know which pot the Tory dopeheads are looking at for their NHS £20bn.
Douglas Moffat
London

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