I've been smoking marijuana for nearly 2 and a half years. I've done as much research as I could and I have a collection of over 20 pages of different quotes, sources, etc. I'm definitely capable of taking a genuine, and credible study that speaks against marijuana, and find the full copy of the real study, analyze it and adjust my statements based on what I've learned. My stances and opinions about various topics related to marijuana have changed over the years and I've become more experienced with it and have learned more about it.
Honestly, I used to be extremely against marijuana. I would get pissed at friends who did it, said that it was horrible for you or causes lung cancer, etc. None of which was true. One of my pot-head drug dealing friends lent me a DVD that was a docoumentary released in 2007-8 that pointed out a lot of the misconceptions about the plant. I've learned a lot about it through research and through personal use, and here are some of the things I've found:
1. It is physically impossible to overdose on weed unless you intend to fully smoke 6.25 grams of weed every second for 20 minutes straight, which even then, you would fall asleep before you could reach toxic levels.
2. Marijuana is statistically as addictive as Caffeine, both substances causes 9% of users to become addicted. Compare that to 15% of alcohol, 24% of heroin, and 33% of Nicotine (yes, 1 out of every 3 people who pick up a cigarette and smoke it will become addicted at some point in their life). While most people who are called "weed addicts" are really just psychologically addicted, which is all related to willpower, it IS possible to become physically addicted (I used to not believe it, but from personal experience, it definitely is possible). However, despite the fact that physical addiction is possible, through my own experience, it is extremely easy to break this addiction, and occasional periodic use will not cause you to suddenly fall back into addiction. I was smoking at least 2 grams every single day for over 8 months. I was physically dependent on the substance, and I went through 2 weeks of being sober, and started to smoke once a day. Later down the road my RSGP sales went south because of the crashing of the market and I was running out of money to buy more. Once I reached the point where I was not willing to spend anymore money, I was sober for another few weeks. It was exceedingly easy. In the last month I have only gotten high 3-4 times, compared to the 90-120 times a month I was getting high previously. I crave a big double-quarter pounder with cheese from McDonald's more than I crave weed right now. The only time I smoke now is if I'm hanging out with friends and having fun. I don't smoke before school like a used to, nor do I have any desire whatsoever to anymore. Hell, I passed my drug test for a new job recently, easiest thing in the world, and I didn't even end up choosing that job. My current job actually doesn't even drug test hourly employees unless they get injured on the job, and all they do is a saliva test, which only picks up weed within 1-2 days of use. I've lived with a Meth Addict, and an Alcoholic in my life, and those kind of addictions don't even compare at all to the addiction of pot, nor the difficulty of breaking a pot addiction.
3. Marijuana does NOT kill brain cells, and I can find you studies to prove it if you really want to fight me on that. Weed's two main chemical ingredients, delta9-Tetrahydracannibinol (THC) and Cannabidiol (CBD) bind like fats to your brain's neurotransmitters. This binding is not permanent, and for the average smoker the effects disappear within 30-90 days depending on how long you've been smoking and how often. I myself experienced the short term memory lapses after smoking as much as I was. I would be having conversations and I'd lose my train of thought so often it was discouraging to even try and have a long in-depth conversation with someone because I'd forget what I was saying 10x or more. My now ex-girlfriend and I would talk every day about tons of shit, and she would constantly have to remember for me what I was saying to bring me back on track (thank jesus she had such a fantastic memory, she was a life-saver). After only 14 days of not smoking, I'd started to talk with her again and she was in shock at the difference in my speech. In an hour long FaceTime conversation she only had to bring me back on track once or maybe twice because of simple brain farts. My psychologist has noticed huge differences from when I first started seeing him and to around now, and he said that it's very noticeable how much more consistent my short term memory is. This shows that while using regularly and consistently, there will be a build-up of these fatty chemicals to your brain, and will slow you down, however, it doesn't take long of being clean or even drastically cutting usage to notice a large difference. However, based on a study released a little over 2 weeks ago, using a sample size of 1,037 people, they tracked these subjects from ages 13... before pot use, until age 38. The compared the differences in IQ changes of 100% sober individuals to users who had started smoking weed before age 18, and those who started smoking weed after 18. They found that out of those who started smoking weed before 18 and continued smoking about 4 times every week until they were 38, when the study ended, experienced an average of 8 points IQ drop. I did not see any attempts to go without it for at least a year to see if there was any recovery, but maybe we'll see that in future studies. Interestingly enough, the doctors involved with the study actually stated that while they believed persistent pot use before the age of 18 was and I quote "neurotoxic," they also stated that they believed pot use over the age of 18 to be "relatively safe." Personally, I've already had full psychological evaluations by medical professionals twice in my life (part of the results includes an accurate IQ score), and I tested to have over a 120 IQ, so to me, 8 IQ points over 25 years isn't really much of a loss for myself personally, however everyone who is under 18 here can make that choice for themselves. It also means that if you're over 18 go ahead and smoke all the weed you want, it's not considered as dangerous by the doctors managing the study.
4. Marijuana has neuroprotective effects on the brain against ethanol (drinking alcohol) related cell death. This means that it actually helps prevent your brain cells from being killed through the use of alcohol.
5. Marijuana is NOT related to Lung Cancer (Tell me otherwise and I will provide you with a 40 minute video interview with Dr. Tashkin MD, the Medical Director of the Pulmonary Function Laboratory at UCLA who will tell you otherwise), and according to Cancer.gov, THC and CBD actually have been shown to have "Antitumor properties" meaning it shrinks the size of tumors, helps prevent the tumor from growing or spreading, and actually helps prevent cell death of healthy tissue surrounding the tumor cells. It has actually cured certain brain cancers in animal studies.
5. The Deparment of Motor Vehicles conducted a study where they compared the impairments of drivers who were under the influence of marijuana compared to that of alcohol. They stated that the overall impairment was comparable to about 0.05 BAC. In most states, 0.08 BAC is the legal limit, however some states, like my own, have a 0 tolerance rule with alcohol, meaning even a 0.01 BAC is considered drunk driving and you will get a DUI ticket for doing so. They also noted that users under the influence of pot were more likely to travel either at the speed limit or slightly under the speed limit, compared to alcohol causing an increase in speed. They also noted that pot influenced drivers were more aware of their impairment, and made extra precautions such as slowing down earlier so they have more time to stop at a stop light or sign, increasing the distance between the car ahead of them, and taking less risky choices while driving (such as waiting for a better opportunity to turn onto a busy street instead of trying to peel out fast so that you can make it in time).
And I'm sure I could think of some more things, but this post is already very long and I might just add more later.
For anyone who thinks weed is all horrible and terrible for you and what-not, try watching this award winning documentary released in 2007:
[youtube]6jO_ncXj7RE[/youtube]