Poor quality sleep could increase Alzheimer’s risk, research suggests

Findings raise possibility repeated disruption of slow wave sleep could lead to a buildup of proteins linked to disease

Sense of purpose aids sleep, US scientists find

People who felt they had a strong purpose in life suffer from less insomnia and sleep disturbance, says neurologist

Half of junior doctors having accidents or near misses after night shifts

Sleep deprivation among trainee doctors and anaesthetists is causing accidents or near misses on way home, report says

Shift work: how to stay healthy while working round the clock

From eating well to finding time for exercise and a social life, here are some tips to survive the slog

Experience: I broke my back while sleepwalking

My body was motionless at the foot of the stairs. My knees were drawn up into my chest, my face was bloody and more blood had pooled underneath me

Teenagers’ sleep quality and mental health at risk over late-night mobile phone use

Researchers advise ‘physical boundaries’ over devices in bedrooms after study finds poor sleep associated with phone use linked to depressed moods

‘Working nights, I end up in a strange limbo’: readers on jobs that affect sleep

A study suggests security guards are among those who get the least sleep. We asked you how your work affects your ability to relax, and your health

Who gets the most sleep? Shop assistants in Germany

New research shows that workers there get an average of almost seven hours a night. But how do they compare with people in other countries and professions?

How does your job affect your sleep?

Do you check work emails late into the night? Or do shift patterns mess with your body clock? Tell us if your job makes it difficult to doze off

Air pollution linked to poor sleep, study finds

Exposure to nitrogen dioxide and airborne particles affects sleep efficiency, says medical professor