http://www.opposingviews.com/i/society/drug-law/top-ten-cannabis-science-stories-2011
Prohibitionists have been using the Gateway Drug scare for years to frighten the public about legalization. Despite every study blowing the concept out of the water, it still resonates with a large segment of the voters. So I decided to take a look at the data to find out which drug is really the one with the greatest correlation to hard drug use, and it definitely wasnt cannabis!
We cross-referenced the NSDUH numbers based on whether someone had ever tried marijuana. We found that only 1.5% of people who have toked became monthly cocaine users. For ecstasy, crack, meth, heroin, LSD, and PCP, less than 1% of the people whove tried pot are using those drugs regularly. Meanwhile, 2.9% of the people whove ever tried an legal analgesic (pain reliever) are regular cocaine users. For ecstasy, crack, and meth, more than 1% of who tried analgesics are regular users. People who tried analgesics are more than twice as likely as people who tried pot to use heroin regularly and three times more likely to use LSD regularly.
But if opponents want to cling to the idea that we should do everything in our power to stop someone from smoking that first marijuana joint, lest they become illegal drug addicts, then it is time to prohibit Vicodin, Lortab, Lorcet, and Oxycontin, those powerful legal opioid pain killers. The first Vicodin/Lortab/Lorcet leads to almost three times the risk of becoming a non-pot illegal drug user than the first joint and almost the same risk as smoking a joint every month. That first Oxycontin is more than five times the risk for drug abuse than the first joint.