"The researchers caution that the study is preliminary and does not demonstrate that marijuana use causes the brain abnormalities."
"On average, they had smoked marijuana from age 13 till age 18 or 19, and reported smoking nearly 6 marijuana joints daily in the final year before they stopped using the drug."
"Ashtari added that the findings are preliminary. Among other limitations of the study, such as a small sample size, five of the 14 subjects with heavy cannabis use also had a history of alcohol abuse, which may have contributed an effect. Also, it is possible that the brain abnormalities may have predisposed the subjects to drug dependence, rather than drug usage causing the brain abnormalities."
Your article doesnt say anything concrete, at all. The study was done on 14 people who abused marijuana at a rate most people dont come close to (6 joints a day for at least a year? That is extreme to say the least) and the people who conducted the study even say that the marijuana users may have had the brain abnormalities before, which may have predisposed them to drug abuse. If you read the article, the people behind it say several times that it is not fact, just hunch, which are not very reliable when it comes to science.
You have to be weary of articles like this. A lot of times the source publishing them is more concerned about getting a headline people will want to look into than staying true to any sort of science. People see "
marijuana abuse may kill brain cells" and they are more like to read than "
a study that is imperfect in many ways and only conducted with 14 people who are probably not good representations of most groups says that smoking 6 joints a day for 365 days a year could possibly (though there is no concrete proof what so ever and this claim is all speculation at this point) lead to the deterioration of brain cells after years of smoking at this rate, and beginning at 13. All this may have a chance at being proven to kill brain cells, but more studies need to be done." It just doesnt seem interesting then. And news publications live off of interesting headlines.
Last edited by deady; Jan 15, 2010 at 02:22 PM.