The LEAF Jan/Feb 2016 | Page 6

callers say they resent being made to feel like criminals. the problems of not treating the symptoms in the first place. Efficacy and side effects The risk of becoming dependant on medicinal cannabis is much smaller than many conventional medications – let alone for alcohol and tobacco. As with many drugs, a small proportion of patients find the intoxicating effects of cannabis sufficiently unacceptable to not wish to take it, even if it’s  beneficial for them. For decades, while attempting to sustain the   prohibition   of   “recreational”   cannabis, the US government promoted research into the adverse effects of cannabis while vigorously obstructing research into its possible medical benefits. Only in the last decade has rigorous clinical research been possible. Cost and pharmaceutical alternative Expert consensus is that cannabis is not a miracle curative drug but it’s very useful for relieving distressing symptoms. A recent review of research about medicinal cannabis use found 82 randomised controlled trials had positive results while only nine were negative. The cost and legal supply of medicinal cannabis remain potential stumbling blocks. It’s   cheapest   to   grow   cannabis   at   home   but   that, as you know, is illegal. And anyway, many seriously ill people are too unwell and frail to grow their own cannabis or to purchase supplies from the black market. What’s   more,   at   least   half   a   dozen   prestigious bodies in Australia, the United Kingdom, Canada and the United States have published favourable reviews of the evidence in the last 15 years. Both homegrown and black-market cannabis are of uncertain medicinal quality. To assure quality, specially prepared botanical cannabis is provided in some countries on prescription. And patients are encouraged to use a vaporiser, which means they will inhale cannabis vapour rather than smoke. The consensus is that cannabis is not a miracle   curative   drug  but  it’s very useful for relieving distressing symptoms, especially when the most often used drugs have not proved sufficiently effective or safe. Medicinal cannabis is acceptably safe, with side effects that are uncommon, generally mild, and outweighed by major benefits. And, of course, any side effects have to be compared to those of other medications such as opioid analgesics, or Medicinal use of cannabis is now permitted in more than a dozen countries including Canada, Switzerland, the Netherlands and Israel. All these countries still prohibit recreational cannabis use – there’s  no  reason   that  Australia  can’t  do  the  same. We believe in the free flow of information. We use a "Creative Commons Attribution No Derivatives" licence, so you can republish our articles for free, online or in print. http://theconversation.com