Dr Amir Khan, a well-known NHS GP and television personality, has issued a health warning for anyone working shift patterns, describing the practice as 'not natural' for the human body. Millions of Britons, particularly those in retail, healthcare, manufacturing, and emergency services, could be subjecting themselves to a process humans are not designed to handle.
The Scale of Shift Work in the UK
According to data from the Office for National Statistics, up to 8.7 million people—roughly 27% of the UK workforce—work night shifts or rotating shifts. These workers include nurses, warehouse staff, shop assistants, and other essential personnel who keep industries running around the clock. However, Dr Khan argues that this modern, capitalist-driven practice treats people as 'functional units' rather than human beings.
Dr Khan's Personal Experience
Speaking on his podcast No Appointment Necessary, Dr Khan shared his own struggles with shift work while working in a busy A&E department. 'Our bodies are not evolved to do shift work,' he said. 'It is a modern thing, part of capitalism, that has been thrust upon us. Your body is not designed to stay up all night one week and then work days the next week.' He emphasised that maintaining a consistent rhythm is far better for health than constantly switching shifts.
The Health Risks of Irregular Schedules
Research indicates that irregular shift patterns disrupt the body's natural circadian rhythm, leading to poor sleep quality, daytime fatigue, and increased risks of metabolic disorders, cardiovascular issues, and mental health problems. In contrast, fixed working hours allow employees to develop regular sleep patterns, optimise deep restorative sleep, and maintain stable blood pressure and heart rate.
Benefits of Consistent Schedules
Beyond sleep, stable shifts help workers maintain regular eating routines, reducing the likelihood of unhealthy snacking and metabolic disturbances. A predictable routine also boosts productivity and creates clear boundaries between work and home life, lowering the risk of burnout. Social engagements, childcare, and personal appointments become easier to arrange, improving overall well-being.
Requesting a More Structured Rota
For those seeking more consistent shifts, Dr Khan suggests having a brief conversation with a manager. Emphasise workplace benefits such as increased productivity and focus, rather than personal convenience. Propose a trial period—for example, 30 days—to demonstrate the viability of the new pattern, which reduces risk for the employer and shows willingness to compromise.
- Consistency is key: Working the same shift pattern for a period allows the body to adapt.
- Prioritise sleep: Aim for 7-9 hours per night in a dark, quiet environment.
- Maintain routine: Eat meals at regular times and avoid caffeine before bed.
While shift work may be normal in modern society, Dr Khan insists it is not natural. By advocating for more predictable schedules, workers can protect their long-term health and well-being.
