The majority of students with education loans were female (59 percent) and black (62 percent). However, these students had a greater formal education - 16 years compared with 13 years - and worked more hours per week, an average of 30 hours compared with 25 hours weekly for their counterparts without loans, according to the study.

The study, published recently in the journal Children and Youth Services Review, included data collected between 1997 and 2012.

Min Zhan (photo by L. Brian Stauffer) is lead author and professor of social work at the University of Illinois. Zhan's co-author, Xiaoling Xiang, is a professor of social work at the University of Michigan.

"The findings are concerning because they suggest that education loans may compromise minority students' wealth-building longer than previously thought," Zhan said. "They also show evidence that education loans negatively impact both the financial and nonfinancial assets of black and Hispanic young adults."

The new study suggests Black and Hispanic adults who graduate college owing money on student loans have significantly lower net worth at age 30 than students who don't borrow to pay for college.

The researchers found Black and Hispanic students who had student loan debt when they graduated accumulated $11,780 less in financial assets and nearly $39,600 less in nonfinancial assets than their peers by age 30.

More than 20 percent of the 1,455 young adults who participated in the study reported having student loan debt at college graduation. Black and Hispanic adults owed an average of about $14,670 when they graduated, compared with $2,946 for students in the full sample.

The researchers examined three markers of wealth accumulation - participants' total net worth, the value of their financial assets such as bank and retirement savings and other investments, and nonfinancial assets, which included real estate equity and the value of any businesses and vehicles that participants owned.

"Years of education is a stronger positive predictor of net worth and greater financial and nonfinancial assets, after controlling for education loans and sociodemographic characteristics," Zhan said. "This finding highlights the importance of college education in building wealth among minority young adults."

While soaring tuition rates at U.S. colleges and universities have compelled more students to go into debt to pay for their education, a number of potential solutions have been proposed. But according to Zhan and Xiang, Pell Grants may be the "most effective investment by the federal government" for helping low- and moderate-income students access college.

Bolstering Pell Grants would have a greater impact on promoting higher education and reducing racial disparities in wealth attainment than offering additional student loans and other types of credit, the researchers suggest.

"Addressing college students' financial needs with additional education loans and other types of credit may be counterproductive for minority young adults' future financial health and may even magnify racial/ethnic disparities in wealth," the researchers wrote.

Data for the study were taken from the 1997 cohort of the National Longitudinal Survey of Youth, a nationally representative sample of the U.S. population that included more than 8,900 respondents, more than 4,200 of whom were black or Hispanic.

Before controlling for socio-demographic characteristics, young adults who had student loans had significantly higher net worth and financial and nonfinancial assets than their peers without education debt, the researchers found.