
- Associated with
- Poorer sleep, more drinking, less exercise, higher obesity odds
- Worth tracking
- Home blood pressure, waist, lipids, HbA1c, liver enzymes, sleep
- Jet lag
- Body clock shifts about 1 hour/day eastward, 1.5 hours/day westward
- Caveat
- Studies are observational; travel goes with long hours and stress
What the research shows
A 2011 study in the Journal of Occupational and Environmental Medicine used health records from more than 13,000 employees in a corporate wellness program. Compared with light travelers (one to six nights a month), people away more than 20 nights a month were far more likely to rate their health as fair or poor and had 92% higher odds of obesity, along with more high blood pressure and unfavorable cholesterol. A later analysis of about 18,000 employees by the same Columbia University team found that people traveling 14 or more nights a month were more likely to report trouble sleeping, be sedentary, smoke, score above thresholds for alcohol dependence and have anxiety or depressive symptoms.
Interestingly, people who never traveled for work were not the healthiest either. Light travelers often did best. Travel tends to go with seniority, long hours and demanding roles, so it is hard to separate the trip from the job. These studies show associations, not proof that travel alone causes harm.
Why the markers move
- Sleep timing: changing time zones and early flights shift your body clock and cut sleep. The CDC describes jet lag as causing sleep disturbance, daytime sleepiness, impaired thinking and digestive upset.
- Food: limited choices, larger portions and eating at odd hours.
- Alcohol: flights, lounges and client dinners. Alcohol may help you fall asleep but fragments sleep later.
- Movement: long days of sitting, and missed workouts.
- Recovery: fewer quiet evenings and weekends to reset.
What is worth measuring
Because the effects build slowly, the most useful approach is to set a baseline and track a handful of numbers over time. Your clinician can help choose the right set for you.
- Blood pressure at home, including some readings from travel weeks
- Waist circumference and weight, measured the same way each time
- Lipids with apoB, and a one-time Lp(a)
- HbA1c and fasting glucose; some people find a continuous glucose monitor informative for a few weeks
- Liver enzymes, which can rise with alcohol and weight gain
- Sleep apnea screening, especially if you snore or wake unrefreshed
What actually helps on the road
- Short trips: the CDC suggests keeping to your home-time sleep, meal and activity schedule rather than adapting to a new zone for a day or two.
- Longer trips: use light deliberately. Morning light helps after flying east; evening light helps after flying west.
- Melatonin, if used, works best at low doses (0.5 to 1 mg) and at the right time; higher doses above 5 mg are not recommended, and products are not FDA-regulated.
- Limit alcohol on flights and set a personal limit for client dinners before you sit down.
- Pack for 20 minutes of movement: a resistance band, a walking route or the hotel stairs.
- Default to a protein-rich breakfast and a simple, repeatable dinner order.
Build a travel routine you do not have to think about
Willpower runs low at the end of a long travel day, so the most reliable habits are the ones you decide in advance. Many frequent travelers do better with a short set of defaults than with a detailed plan they abandon by the second night.
Examples include booking hotels with a gym or a safe walking route, choosing an aisle seat so you get up during long flights, carrying a refillable water bottle and a couple of protein-rich snacks, and agreeing with yourself on a drink limit before any dinner. Keep your wake-up time within an hour of usual whenever the schedule allows. Over months, these small defaults usually matter more than any single trip.
Medicines and travel
If you take a weekly injection such as a GLP-1, time doses around your travel plans and keep medication at the right temperature. Nausea from these medicines can be worse with dehydration and large restaurant meals. If you use testosterone or hormone therapy, carry it in your hand luggage with the pharmacy label.
Sleep medicines can be useful for some travelers but should be discussed with a clinician; the CDC advises avoiding sedating antihistamines and long-acting sleep drugs because of next-day impairment and falls.
How HealifyMD fits a travel schedule
Visits happen online, and lab draws can be done at many patient service centers, so you can fit them into a home week. For comparison over time, try to draw labs under similar conditions each time, ideally in a typical week rather than the morning after a red-eye.
Care is available only in states where our clinicians are licensed, and medication ships to an address in one of those states.
Common questions
How much travel is too much?
There is no set cutoff. In studies, problems were more common at the highest travel levels, but how you sleep, eat, drink and move on the road matters as much as the number of nights.
Is jet lag actually harmful or just unpleasant?
For most people it is temporary, but it disrupts sleep, thinking and digestion, and frequent jet lag adds up to chronic short sleep.
Should I get labs drawn during a travel week or a quiet week?
A typical week is best, and the same kind of week each time so results are comparable.
Can I use HealifyMD while traveling constantly?
Usually yes, as long as you are in a state where our clinicians are licensed for visits and can receive shipments there.
Does travel affect hormones?
Indirectly. Short sleep, alcohol and weight gain can lower testosterone in men and worsen menopause symptoms in women.
Does melatonin help with jet lag?
It can help when timed correctly, usually at low doses. The CDC notes that melatonin products are not regulated by the FDA, so contents can vary.
Sources
We cite government agencies, professional societies and peer-reviewed research. See our editorial policy.
- Business travel and behavioral and mental health (J Occup Environ Med study summary)Columbia University Mailman School of Public Health
- CDC Yellow Book: Jet lag disorderCenters for Disease Control and Prevention
- About sleepCenters for Disease Control and Prevention
- Sleep apneaNational Heart, Lung, and Blood Institute
- Alcohol's effects on the bodyNational Institute on Alcohol Abuse and Alcoholism