What is Jetlag?
Jet lag (sometimes referred to as jet lag disorder) is a temporary issue that occurs when you travel across several time zones in a short space of time. This problem can affect travellers of all ages.
Your body has its own internal clock known as circadian rhythms, which signal when it is time to be awake and time to go to sleep. This is commonly known as your body clock. The reason for jet lag occurring is because your body clock is still synchronised to your normal time zone. Your jet lag is likely to be more severe the more time zones you travel across.
How long does it last?
The problem is only temporary, but it can cause unpleasant symptoms, such as not feeling well, fatigue, difficulty trying to stay awake and gastrointestinal problems.
At Medicine Direct, there are several medicines you can take to help you adjust to your new schedule, fall asleep when it is night time and reduce jet lag symptoms. After an online consultation with one of our doctors, they will prescribe you an appropriate treatment to help your internal clock adjust to the new time zone. Order from our UK pharmacy by 2pm and you will receive your medicine the very next day.
Jet Lag Symptoms
The symptoms of jet lag may vary from person to person. The severity of your symptoms, how many you suffer from and how long they last will also depend on the individual.
However, the symptoms of jet lag can include:
- Changes in your mood
- Feeling generally unwell
- A disturbed sleep schedule (insomnia, sleeping too much or waking up too early)
- Daytime fatigue
- Feeling tired or exhausted
- Difficulty concentrating or remembering things
- Constipation or diarrhoea
- Stomach problems
Symptoms worsen the farther you travel
The more time zones you travel across, the more severe your jet lag is likely to be. Studies have shown that people who are travelling east are more likely to suffer from jet lag disorder than those who are travelling west. When you travel across time zones, it will normally take about one day to recover from each time zone you travel across. If you have travelled across several different time zones, your body may take several days to recover.
If you have crossed more than two time zones, jet lag will normally appear within one or two days of travel.
Causes of Jetlag
Jet lag is caused by a disruption in your circadian rhythms
Not everybody suffers from jet lag, but it is caused by travelling across at least two time zones in quick succession. Doing this disturbs your body's circadian rhythms, which regulate when it is time to wake up and time to go to bed.
This means that the new time zone you are in is not in sync with your body clock. As a result, your body may tell you that it is time to wake up when it is actually time to go to bed in your new location.
Because it also takes a couple of days for your body to adjust, it is not just your sleep schedule is not the only thing that may be disturbed. You may also find that your eating and bowel habits need time to adjust to the new time zone; this may cause stomach upsets.
Exposure to sunlight
Sunlight has a major influence on your sleep schedule. Your body's natural hormone melatonin is influenced by light; this hormone is released by the pineal gland and regulates your wake-sleep cycle.
Light signals are transmitted from cells in your retina to an area of your brain called the hypothalamus. The hypothalamus informs the pineal gland to release melatonin in the evening, when the light signal is lower.
Certain studies have suggested that some of the symptoms of jet lag may be exacerbated by the changes in cabin pressure and the high altitudes of flying.
Failing to drink enough water may also bring on jet lag symptoms. Humidity levels are very low on planes, meaning that if you do not drink enough water during air travel, you may become dehydrated.
Who is most at risk?
Certain factors make it more likely for some people to experience jet lag than others.
You are at a greater risk of this problem if:
- You are elderly; elderly people need more time to recover from this problem
- You fly frequently, such as for business, you are a pilot or an air steward
- You are travelling east
- You are travelling across more than two time zones; the more time zones you travel across, the greater risk you have of jet lag
Motor vehicle accidents that occur as a result of drowsiness may be more likely in jet-lagged people.
Treatment for Jetlag
There are various techniques you can try to lessen the effects jet lag when you are travelling to a different time zone.
Try to sleep properly before you travel; getting plenty of sleep ahead of your trip will mean you are set up better for a new time zone. Arriving in your new location feeling tired and fatigued will only make your symptoms worse. One way you could do this is by going to bed and getting up earlier or later than usual, adjusting this to fit the time zone you will be travelling to.
Staying hydrated is another important factor in reducing the effects of this problem. Make sure you drink plenty of water before, during and after the flight to combat the dehydration that can be caused by airline cabins. You should also avoid alcohol and caffeinated drinks like tea or coffee, as these can also dehydrate you and stop you from getting enough sleep.
If it is the evening in the destination you are travelling to, try to sleep on the plane. If it is daytime in your destination, try not to fall asleep until it is night time.
Try to adjust your schedule gradually before you set off for your new location. For example, if you are going somewhere with a time zone that is a few hours in front of your current one, try to go to bed an hour or two earlier than usual. This will help to regulate the change when you get there. Similarly, try to eat at similar meal times to those in the new destination.
Medical treatment for jet lag
Aside from taking these precautions to help you to adjust to a new time zone, you may also wish to take some medicine with you to help your body to adjust.
One of the most effective medicines for many people to take is the sleep medication Circadin. Circadin contains melatonin as its active ingredient and, when taken correctly, it can help you adjust to your new local time and help you sleep when it is dark.
If you are over the age of 55 and have insomnia, this medicine may be prescribed to help you sleep. However, it is also an 'off-label' treatment for people who only need it for a short time to avoid any circadian rhythm problems when travelling to a new destination.
To help your body sleep and adjust to the time change, you should take Circadin (melatonin) at bed time on the first day you arrive in your new location.
Circadin (melatonin) is available to order from Medicine Direct after an online consultation with a doctor.
Does melatonin have any side effects?
Can I treat jet lag with sleeping pills or alcohol?
Is it safe to buy jet lag treatment online?
Do you always experience the same amount of jet lag?
What is melatonin and how does it help to reduce jet lag?
How long does it last?
How does jet lag affect you?
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