You can consume cannabis without smoking it, effectively removing any risk of lung damage associated with smoking.
I didn't argue on the basis of lung damage. You can sniff Coke - effectively removing any risk of vein damage...
Unfortunately, because of its legal status in the United States it is very difficult to do any sort of research on cannabis. Until these constraints are relaxed, the study I linked to is all you're getting. And it's sufficient enough for me.
Firstly, the USA is not the foremost authority on medicine - it's one of them, yes, but Australia is as well, as are many other countries I'm sure. You may be happy with that evidence - I wouldn't be. If a doctor prescribed me a drug and said to me "we do not know the long term effects" - I'd ask to take an alternative.
[rant]
This reminds me of an argument I've had with friends - from time to time - when they've brought up 2nd-hand smoke. I say "there's no evidence it kills" - they disagree. Show me a study, I keep asking - but there aren't any - the largest such study was one financed by the tobacco industry, but of course people "well you can't trust that". If memory serves me correctly, those who did the study took a sample of people and then asked questions about who was or wasn't exposed to 2nd-hand smoke growing up, and who was/wasn't married to a smoker - etc, and at the conclusion of the survey found that there was no distinguishable difference in the risk of cancer between those around 2nd hand smoke, and those not around it. Yet even in the light of that very strong scientific evidence most people refuse to believe it.
Asbestos was brought up earlier - and in case you don't know who he is, Bernie Banton died recently after a long battle with asbestos related diseases, and a long battle against James Hardie. One of the things he said publicly was that a single asbestos fibre can kill because no one in the world knows a safe level of the substance. Now, if I was so inclined I could use that logic against cannabis - and say that no one can give you a healthy dose, and guarantee you won't suffer long-term side effects.
However, I don't agree with that P.O.V. - but it is one that exists, and so is worth mentioning. I don't have to prove anything to anyone here - as I've already said I have studied this and reached my conclusions. I study a lot of things, because as soon as someone makes a claim they believe - and an opposing point of view can potentially exists I want to find out more.
For instance, I'm currently making a very anti-DRM (digital rights management) website. Things like Region Coding I see as bad for the consumer, and a violation of the consumer's rights. On the other hand, a good friend of mine has just this week said the following (this is a direct quote from an email):
Now, as to all that garbage about region coding, it’s crap. The designers are just protecting what’s rightfully theirs and you know it. The premise of what the website will be about is unchristian and you should know better.
It’s STEALING.
So now I've been studying the other POV. It is very hard to reconcile because I still don't, and cannot accept that a publisher has the right to dictate what their customer can do with the product in a way of restricting the product geographically. If this was the case, every book seller in Australia - including Christian ones - would be doing something that breeches the "designer's" rights - because retail can import books from another country without permission from the copyright holders. Their copyright is still valid - so they can't import copyright-infringing works.
[/rant]
Okay, back on topic - the most basic conclusion I have drawn with drugs (and I use this term to represent ALL drugs) is the following:
1. All drugs are bad when abused.
2. Therefore you should never take medicine you don't need.
3. As such you should consult your doctor prior to taking any drug for the first time.
4. You should always avoid drugs where the side-effects are not controlled/known.
Yes that'll do.
In several governing districts in the US it has also been moved to the lowest level of enforcement.
That's because in the USA you have a big drug problem, and the resources are better spent fighting Crystal Meth and Opiates.
Pot is an anti-social drug. When I've been around a bunch of pot-head peers it is anti-social - they just want to watch TV and much down food (or sleep); whereas if I go down to the pub it is very social. People want to talk or shoot pool, or play cards - whatever, it is much more social. This is my point of view - when I have been around stoned peers, I just have to look at them to know I do not want to be like that.