LONG-TERM EFFECTS
In addition to the possible effects on your brain, smoking marijuana may also be hazardous to your developing lungs. Marijuana smoke contains 50% to 70% more carcinogenic hydrocarbons than tobacco smoke.41
You may have heard people argue that marijuana is a "gateway drug" to harder drug use. Some say this is a myth, others insist it is a fact. The truth is that there is a link. Research shows that the earlier you start using marijuana, the more likely you are to become dependent on it or other types of drugs later in life.42
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