Train and bus drivers, doctors and carers, employees in companies where machines run around the clock: In many industries, people work in shifts. Some start early in the morning, or at midday. Others ...

MINNEAPOLIS — Irregular night shift work is well known for its potential to cause sleep problems, but a new study suggested it can also be associated with an increased risk of developing migraines.

New evidence from more than 266,000 UK adults reveals that working permanent night shifts can disrupt the body’s internal clock, alter gut function, and heighten the risk of irritable bowel syndrome.

For many, working at night is part of their daily routine. Doctors, nurses, factory workers, security guards, and call centre staff often keep cities running while others sleep. But science is now ...