Britons urged to test their 'heart age'

Experts in the United Kingdom have said four out of five adults have hearts that are more damaged than they should be for their age, putting them at greater risk of early death.

Public Health England called on Britons to monitor their own health more closely in order to reduce their risk of having a heart attack or stroke, after studying the initial results of a new online test.

The revelation reflects in part Britain's high levels of obesity and physical inactivity and previously high smoking rate. The nation's public health agency suggested people should check their "heart age" using the new online calculator.