BOSTON — U.S. Sen. Elizabeth Warren said Saturday she is shocked that the federal government is earning an estimated $66 billion in profits from student loans originated between 2007 and 2012.

The Democrat from Massachusetts was reacting to a Government Accountability Office report Friday. A previous Congressional Budget Office report estimated that the government will pocket an additional $185 billion in profits on new student loans made over the next 10 years.

‘‘This is obscene. The government should not be making $66 billion in profits off the backs of our students,’’ Warren said in a statement. ‘‘This report reinforces what we already knew — instead of investing in our children and their futures, the government is squeezing profits out of our young people and adding to the mountain of debt they will spend their lives struggling to repay.’’