shift work health travel health tips

Overview

Shift work means working outside the usual daytime hours, such as nights, early mornings, or rotating shifts. This can disrupt your body's internal clock, which controls sleep, hunger, and energy. When this happens, it is called shift work disorder. It can make it hard to get good sleep and feel rested, and it can affect your health. This article also offers travel health tips for people who do shift work, such as how to manage time zone changes and stay healthy on the road.

Yes. Millions of people around the world work shifts, and many experience at least some sleep or health problems because of it. Shift work disorder itself is thought to affect about 10–30% of shift workers.

It affects people who work night shifts, rotating shifts, early morning shifts, or split shifts. This includes healthcare workers, emergency responders, factory workers, pilots, and many others. People over 50 may find it harder to adjust, as can those with certain health conditions.

Symptoms

Common symptoms

• Trouble falling asleep or staying asleep during the day
• Feeling very sleepy or falling asleep at work
• Low energy and tiredness most of the time
• Difficulty concentrating or remembering things
• Irritability, low mood, or anxiety
• Stomach problems like indigestion, nausea, or poor appetite

Symptoms in children

• Shift work disorder is not diagnosed in children. But children in a family with a shift worker may have disrupted routines, which can affect their sleep and mood. If you have concerns about your child's sleep, talk to your family doctor.

Symptoms in older adults

• As we get older, the body clock can become less flexible. Older adults may take longer to adjust to shift changes and may feel more tired during recovery days. Sleep problems can also become worse with age, so it is important to talk to a healthcare provider if you are struggling.

Causes

Main causes

• Working when your body expects to be asleep sends confusing signals to your internal clock.
• Lack of exposure to natural daylight at the right times can keep your body clock out of sync.
• Irregular sleep and eating times disrupt your natural rhythms.
• Rapidly changing shift schedules make it hard for your body to adapt.
• During travel, crossing time zones adds another layer of disruption, making it even harder to stay on schedule.

Risk factors

• Working rotating shifts, especially ones that move forward (morning to night)
• Working many night shifts in a row with little recovery time
• Long commutes after a shift
• Having a bedroom that is not dark or quiet enough for daytime sleep
• Caffeine, alcohol, and heavy meals close to bedtime
• Medical conditions like sleep apnea or anxiety
• Age over 50

When to see a doctor

See a doctor urgently if:

• If you feel so sleepy that you nearly fall asleep while driving or doing a safety-critical task, stop and get help right away.
• If you have thoughts of self-harm or suicide, contact emergency services immediately.
• If you have any emergency symptoms listed under 'call emergency', call your local emergency number now.

Book a routine appointment if:

• If you have had trouble sleeping or constant fatigue for more than 2–4 weeks despite trying good sleep habits.
• If your mood is low, anxious, or you feel irritable most of the time.
• If you have digestive problems, headaches, or other symptoms that keep coming back.
• If you are planning travel and want personalized advice about adjusting your sleep schedule.

Diagnosis

A healthcare provider will ask about your work schedule, sleep patterns, and symptoms. They may ask you to keep a sleep diary for a week or two. There are no lab tests that diagnose shift work disorder directly, but your provider may want to rule out other conditions like sleep apnea or depression.

Tests that may be done

• Sleep diary – you record when you sleep, when you work, and how you feel.
• Actigraphy – a small wrist-worn device that tracks your rest and activity over several days.
• Blood tests – to check for thyroid problems, low iron, or other conditions that can cause fatigue.
• Sleep study – sometimes used if another sleep disorder is suspected.

What to expect at your appointment

A doctor can work with you to confirm whether your symptoms are related to shift work or something else. They can help you create a practical plan to improve sleep and alertness, and they can refer you to a sleep specialist if needed. The process is supportive and aims to help you function better at work and at home.

Treatment

Treatment for shift work disorder focuses on improving your body's ability to adjust, maximizing your sleep quality, and keeping you alert when you need to be. It usually involves a combination of lifestyle changes, such as managing exposure to light, improving sleep environment, and timed naps. In some cases, a doctor may consider short-term medications to help with sleep or alertness, but these are never a first step and should only be used under medical supervision.

Self-care at home

• Keep a regular sleep schedule even on days off – try to go to bed and wake up at the same time as your work schedule allows.
• Make your bedroom dark, cool, and quiet. Use blackout curtains, earplugs, or a white-noise machine.
• Limit caffeine in the second half of your shift and avoid it before your sleep time.
• Take a short nap (20–30 minutes) before a night shift or during a break to boost alertness.
• Stay hydrated throughout the shift, and avoid heavy meals close to bedtime.
• Use bright light therapy – if you are working nights, bright light during the first part of the shift can help, but talk to your doctor first.
• When traveling across time zones, gradually adjust your sleep and meal times a few days before you leave, if possible.

Medical treatments

A doctor may prescribe medication to help you sleep during the day or to promote alertness during night shifts. These are not the same as sleep aids you can buy over the counter, and they should never be used without a proper assessment. The doctor will choose the right approach based on your health and needs, and will monitor you closely. Other treatments may include melatonin (a natural hormone) at the right time, but only under a healthcare provider's guidance. Never use any medication or supplement without talking to a qualified professional.

When is surgery considered?

Not applicable. Shift work disorder does not require surgery. However, if your health problems are caused by an underlying condition that surgery could help (for example, severe sleep apnea not responding to other treatments), your doctor will discuss that with you separately.

Living with this condition

Living with shift work means building a routine that protects your sleep and health. It helps to plan your day around your shifts, including when to sleep, when to eat, and when to be active. Communicate with your family and friends so they understand your schedule. When you travel, plan ahead to reduce jet lag – for example, try to schedule flights that help you arrive in time to get a full sleep before your first shift.

Lifestyle tips

• Get regular exercise, but not too close to your main sleep time.
• Spend time outdoors in natural light during your 'day' as much as possible.
• Create a relaxing bedtime routine, like reading or gentle stretching.
• Limit alcohol – it can make sleep less restful.
• Use earplugs and a sleep mask if needed, especially when sleeping in unfamiliar places like hotels.
• If you work through the night, take a 15–20 minute walk on a break to stay alert.

Diet and exercise

Eat balanced meals with lots of vegetables, fruits, whole grains, and lean proteins. Try to keep meal times consistent, even if they shift with your schedule. Avoid heavy, greasy, or sugary foods just before sleep – they can cause heartburn and restless sleep. Stay hydrated with water, and limit energy drinks or high-caffeine drinks. Exercise helps your body and mind, but try to do it a few hours after waking, not right before sleep.

Mental health and emotional wellbeing

Shift work can make you feel isolated, grumpy, or anxious, especially if you have trouble sleeping. These feelings are common, but they should not be ignored. Talk to someone you trust. If you feel sad, hopeless, or worried most of the time, please reach out to a healthcare provider. If you ever have thoughts of harming yourself, call your local emergency or crisis line right away – there is always someone who can help you.

Prevention

You cannot prevent the need to work shifts, but you can reduce how badly it affects you. Good planning is key. If possible, choose schedules that rotate forward (morning to evening to night). Make sure you take enough days off to recover. When traveling, follow the same sleep and light strategies to help your body adapt more quickly.

Vaccines

Not directly related to shift work, but staying up to date on routine vaccines is always important for your overall health. If you travel internationally for work, ask your healthcare provider about travel vaccines at least 4–6 weeks before your trip.

Screening programmes

If you have symptoms like loud snoring, gasping during sleep, or severe daytime sleepiness, ask your doctor about testing for sleep apnea. There is no routine screening test for shift work disorder, but your annual health check is a good time to discuss your sleep and work schedule.

Complications

If left untreated

• Chronic insomnia or severe sleepiness that affects your quality of life
• Higher risk of accidents and injuries at work or while driving
• Increased risk of mood disorders like depression or anxiety
• Increased risk of heart disease, diabetes, and obesity over the long term
• Stomach and digestive problems from irregular eating and stress
• Strained relationships because of irritability or missing out on family time

Long-term outlook

With the right strategies and support, most shift workers can improve their sleep and feel better. Some people adjust more easily than others, and you may need to try different approaches. Be patient with yourself. There are many effective techniques, and your healthcare team can help you find what works for you. If you are concerned about long-term health risks, making gradual lifestyle changes now can make a big difference.

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