Personally I don't think that any substance that alters your cognitive activities to a greater extent should be legal, especially when it is addictive and causes serious abstinence problems.
I'd like to see evidence for this. I'd also like to know if you think tobacco and alcohol should be legal. If you do then you don't have a coherent position seeing as combined they are responsible for about 53 thousand deaths a year in the usa
You can't have evidence for an opinion. You can have supportive arguments, but not evidence.
Tobacco, while extremely (physically)addictive and not healthy in any way, does not alter your cognitive functions to a greater extent. Alcohol is both addictive, to a lesser extent than nicotine, an causes a severe imbalance in your brain (drains the water from it) which definitely alters your cognitive capabilities.
But, and I think you can agree with me on this one even if you do not agree with my stance, two wrongs don't make a right. Just because there are other substances which have other effects, (for example alcohol causes lack of judgment and balance causing accidents and violence) it doesn't mean that marijuana is "more ok". By that logic, LSD should be legalized because that it doesn't cause as many deaths as alcohol. Which is no wonder, because: Alcohol is legal, alcohol can be made by yourself (moonshine) from just about anything, alcohol is available everywhere and more people use it than smoke pot (I am not from USA, I do not speak just for America, I'm talking about the world). So of course, there will be more incidents involving something which is widespread than something hidden/illegal with fewer users. In all fairness, seeing as even though alcohol and marijuana are both classified as depressants (tobacco is a stimulant) they have vastly different effects on our bodies and thus the effect would be different.
To clarify: my first statement was general and meant to encase not just marijuana.
fair enough. but the thing is that even though two wrongs don't make a right, Marijuana can't be linked to any deaths whatsoever. Marijuana is a massively used substance and provides a huge boon to drug lords, whereas LSD doesn't (although i don't know enough about LSD to say whether it should be legal or not. Im also not saying that how much a gang or drug lord profits from something should determine whether its legal or not but rather that could be.) Here are some quotes from a source I provided in my letter to the editor (here is source
http://www.drugwarfacts.org/cms/Marijuana#Effects)
(marijuana and cognition) "In conclusion, our meta-analysis of studies that have attempted to address the question of longer term neurocognitive disturbance in moderate and heavy cannabis users has failed to demonstrate a substantial, systematic, and detrimental effect of cannabis use on neuropsychological performance. It was surprising to find such few and small effects given that most of the potential biases inherent in our analyses actually increased the likelihood of finding a cannabis effect."
Source: Grant, Igor, et al., "Non-Acute (Residual) Neurocognitive Effects Of Cannabis Use: A Meta-Analytic Study," Journal of the International Neuropsychological Society (Cambridge University Press: July 2003), 9, p. 687.
http://www.csdp.org/research/348art2003.pdf(marijuana and cognition) "The results of our meta-analytic study failed to reveal a substantial, systematic effect of long-term, regular cannabis consumption on the neurocognitive functioning of users who were not acutely intoxicated. For six of the eight neurocognitive ability areas that were surveyed. the confidence intervals for the average effect sizes across studies overlapped zero in each instance, indicating that the effect size could not be distinguished from zero. The two exceptions were in the domains of learning and forgetting."
Source: Grant, Igor, et al., "Non-Acute (Residual) Neurocognitive Effects Of Cannabis Use: A Meta-Analytic Study," Journal of the International Neuropsychological Society (Cambridge University Press: July 2003), 9, p. 685.
http://www.csdp.org/research/348art2003.pdf(marijuana and cognition) "Current marijuana use had a negative effect on global IQ score only in subjects who smoked 5 or more joints per week. A negative effect was not observed among subjects who had previously been heavy users but were no longer using the substance. We conclude that marijuana does not have a long-term negative impact on global intelligence. Whether the absence of a residual marijuana effect would also be evident in more specific cognitive domains such as memory and attention remains to be ascertained."
Source: Fried, Peter, Barbara Watkinson, Deborah James, and Robert Gray, "Current and former marijuana use: preliminary findings of a longitudinal study of effects on IQ in young adults," Canadian Medical Association Journal, April 2, 2002, 166(7), p. 887.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC100921/pdf/20020402s00015p88...
(marijuana and cognition) "Although the heavy current users experienced a decrease in IQ score, their scores were still above average at the young adult assessment (mean 105.1). If we had not assessed preteen IQ, these subjects would have appeared to be functioning normally. Only with knowledge of the change in IQ score does the negative impact of current heavy use become apparent."
Source: Fried, Peter, Barbara Watkinson, Deborah James, and Robert Gray, "Current and former marijuana use: preliminary findings of a longitudinal study of effects on IQ in young adults," Canadian Medical Association Journal, April 2, 2002, 166(7), p. 890.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC100921/pdf/20020402s00015p88...
(marijuana and cognition) A Johns Hopkins study published in May 1999, examined marijuana's effects on cognition on 1,318 participants over a 15 year period. Researchers reported "no significant differences in cognitive decline between heavy users, light users, and nonusers of cannabis." They also found "no male-female differences in cognitive decline in relation to cannabis use." "These results ... seem to provide strong evidence of the absence of a long-term residual effect of cannabis use on cognition," they concluded.
Source: Constantine G. Lyketsos, Elizabeth Garrett, Kung-Yee Liang, and James C. Anthony. (1999). "Cannabis Use and Cognitive Decline in Persons under 65 Years of Age," American Journal of Epidemiology, Vol. 149, No. 9
http://www.ncbi.nlm.nih.gov/pubmed/10221315