Types of Jet Lag

Jet lag is usually described by the direction you fly and the pattern of sleep trouble it causes.

By direction of travel

• Eastbound jet lag: you must sleep earlier than your body wants. The main problem is difficulty falling asleep at the new bedtime and trouble waking in the morning. Recovery is usually slower.
• Westbound jet lag: you must stay awake later. The main problem is waking too early. Recovery is usually quicker.
• North-south travel: crossing few time zones causes little jet lag, though travel tiredness may occur.

By symptom pattern

• Insomnia type: trouble falling asleep or staying asleep
• Daytime sleepiness type: strong tiredness during local daytime
• Mixed type: both together, often with digestive upset and poor focus

By severity

• Mild: 1 to 3 time zones, short recovery
• Moderate: 4 to 7 time zones
• Severe: 8 or more time zones, or frequent travel without recovery time

Related conditions

• Social jet lag: a mismatch between weekday and weekend sleep times, which is not caused by travel
• Shift work disorder: a similar clock problem from night work

Ayurvedic grouping

Ayurveda does not list jet lag as a separate type. It is treated as a Vata imbalance from travel and disturbed routine. This is a traditional framework.

Key point

Direction and number of time zones decide the type and length of jet lag. Eastbound trips are usually the hardest.

Before your appointment

Note where and when you travelled, how many time zones you crossed, and how long your sleep problems have lasted. List all medicines, melatonin, herbs and supplements you take, and your caffeine and alcohol use. Mention snoring, low mood, anxiety, leg pain or swelling, and any existing conditions such as diabetes or epilepsy. If you are pregnant or travelling with a child, say so. Ask about safe sleep aids and the warning signs that need urgent care. Call 112 for chest pain or severe breathlessness.