In one of those studies that should seem to be a no-brainer, researchers have found that the combined use of alcohol and marijuana is more dangerous for teen drivers than the use of either of the drugs alone. Teens who combine the two drugs get more traffic tickets and are involved in crashes at a higher rate than users of just marijuana or alcohol.

With the push to legalize marijuana throughout the country, teens may be getting the false message that marijuana is a harmless drug. They need to be reminded that, even though it may be legal in some states, it is still illegal to drive while under the effects of the drug. Combining marijuana and alcohol means adding one depressant to another and leads to a synergistic effect where the effects of the two drugs are combined are more powerful.