A common phrase associated with marijuana is “gateway drug.” Michael T. Lynskey, PhD, reports: “Individuals who used cannabis at age 17 had odds of other drug use, alcohol dependence, and drug abuse/dependence that were 2.1 to 5.2 times higher than their co-twins, who did not." consume cannabis before the age of 17”. People believe that if a person is capable of using a drug, what stops them from wanting to get an even more powerful high from drugs like crack/cocaine. Most case studies show that drug addiction among adults is related to drug exposure during adolescence. The DEA has also stated that the most deadly consequence of marijuana is its ability to induce drug users to experiment (Medical Marijuana). Marijuana is considered an addictive substance, which is one of the main reasons for its illegality. Doctors believe that the “high” is not the only mental or psychological effect on the body. A study from Northwestern University found that marijuana users have abnormal brain structure and poor memory, and that chronic marijuana abuse can lead to brain changes similar to schizophrenia. The study also reported that the younger the person starts using marijuana, the worse the effects become (5 Reasons Why Marijuana Should Remain Illegal). Additionally, research has shown a potential link between marijuana and depression/anxiety. It is not known whether smoking cannabis causes these mental illnesses, but it is thought to make things worse. Many marijuana advocates think that the marijuana they want to legalize is the same plant they may have experimented with in college. Marijuana sold in the 1980s averaged between 3 and 4 percent THC, the psychoactive ingredient. Today's variety of marijuana averages over 12% THC, with some strains reaching 30% (Frum 2014). If they knew how strong the power is