After a decade of escalating US household debt brought on by low wages and the national debt more than doubling over the same time frame, to $21 trillion, debt could soon put the brakes on this economic recovery, analysts warn.

"We think the major economies are on the cusp of this turning into the worst recession we have seen in 10 years," said Murray Gunn, head of global research at Elliott Wave International.

And in a note, he added: "Should the [US] economy start to shrink, and our analysis suggests that it will, the high nominal levels of debt will instantly become a very big issue."