It’s no secret that college students can be exposed to sex, drugs and alcohol during the years they spend earning their degrees. And unfortunately, some students get a little too exposed and must seek help.

According to a new government study, U.S. college students seeking treatment for substance abuse are more likely to be having trouble with alcohol than with abuse of drugs.

Researchers at the Substance Abuse and Mental Health Services Administration (SAMHSA) analyzed data from 2009, when about 374,000 people between the ages of 18 and 24 were treated for substance abuse or dependence in the United States.

The study was based on an analysis of SAMHSA‘s 2009 Treatment Episode Data Set, which drew on reports from thousands of publicly supported substance abuse treatment facilities in the country.

About 362,000 of those admitted for treatment were young adults who were not enrolled in college or post-secondary school, the researchers found. About 12,000 of the admissions involved young adults enrolled in higher education.

Nearly half of the college students admitted for treatment in 2009 were having problems with alcohol, compared with 30.6 percent of the non-students, researchers said.

Marijuana remains a significant problem with both groups, the researchers found, accounting for 30.9 percent of the treatment admissions involving college students and 30 percent of the admissions involving non-students.

However, when it came to other drugs, college students had markedly lower rates of treatment admissions than non-students their age.

Only 7.2 percent of the college students seeking treatment in 2009 were abusing heroin, compared with 16.1 percent of the non-students.

Cocaine admission rates were more than twice as high for non-students than for students and methamphetamine admissions were more than four times higher for non-students, the researchers said.

SAMHSA is the unit within the U.S. Department of Health and Human Services that focuses on substance abuse and mental illness.