Questionning 'one in four'

[image error]The Guardian has an excellent article questioning the widely cited statistic that '1 in 4' people will have a mental illness at some point in their lives. The issue of how many people have or will have a mental illness raises two complex issues: how we define an illness and how we count them.

Defining an illness is a particularly tricky conceptual point and this is usually discussed as if it is an issue particular to psychiatry and psychology that doesn't effect 'physical medicine' but it is a...