Is coffee really the devil’s brew?

Many of us can't start the day without it, but new research says it stops us working well. Oliver Burkeman searches for the truth about caffeine.

Confidential? Probably not

Job applicants are increasingly likely to be asked to fill in a medical questionnaire. Dr Theodore Dalrymple advises caution.

Doing nights

Britain is now open 24 hours a day - but experts warn that we are not meant to be awake at night. Merope Mills on the dangers of working from dusk to dawn