You have heard the message for years: A college education will give you vastly expanded career opportunities and dramatically higher income for the rest of your life. Easy as pie, right?

Not if you have to take out student loans. New data from LIMRA, an association providing research and consulting to insurers, shows that just $30,000 in student debt can cut as much as $325,000 from your 401(k) balance by the time you retire.