President Obama’s claim that the Department of Veterans Affairs is “turning the tide” on backlogged disability claims is premature because the costly push to bring the numbers down is unsustainable and could doom those seeking benefits to years-long waits in appeals, according to veterans’ advocates.

Drops in both the number and percentage of disability claims considered backlogged because they are more than 125 days old are real. But they have come at a high price in mandatory overtime and accuracy, representatives of veterans groups say.