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"When you project trends in both pension spending and health and other age-related spending forward, the UK public finances are in an unsustainable position in the long-run," he said.

It concluded that “immigration has an overall positive impact on long-run economic growth in the U.S.” and also noted that “the rate of unemployment for native workers decline” with “larger immigration flows.”

Nearly all long-run economic polling data or qualitative study on economic well-being conclude that most Americans exist in a nearly permanent state of economic dissatisfaction, though not always in an outright crisis.

The details of the long-run damage remain to be revealed.

In the long-run, Prof Roychoudhuri suspects new drugs would be developed that take the benefits of aspirin, but with fewer of the risky side-effects.