The short answer
See your doctor before travel, especially before any trip above 2,500 metres. Carry all medicines in hand luggage with a doctor's letter and prescriptions in generic names, and extra supply in case of delays. For diabetes, cold and altitude can affect insulin storage and glucose meters, so ask your doctor how to store and check them, and carry snacks for low sugar.
For heart or blood pressure conditions, avoid trips that require fast ascent, and choose low-altitude places or have a doctor clear you for a trek. Tell your guide, and make sure your insurance covers pre-existing conditions and evacuation.
Key facts
- Before
- Doctor review and letter
- Carry
- Medicines in hand luggage, spares
- Diabetes
- Plan insulin storage, snacks
- Heart / BP
- Avoid rapid ascent
How it works
- Medical checkBefore booking.
- Get a letterDiagnosis and meds.
- Pack sparesDouble supply.
- Plan storageCold and heat.
- Tell your guideEarly.
Medical planning
Long-term conditions need planning more than avoidance. See your doctor well before travel, share your itinerary with its altitude, and ask what monitoring and limits are sensible for you. Carry a letter listing your conditions and medicines.
Pack all medicines in hand luggage with spares, and keep them cool and dry. Know how to adjust routines across time zones and long travel days.
Staying safe on the road
Cold and altitude can affect equipment such as meters and insulin pens, so ask your doctor how to store them. Keep snacks within reach and eat regularly. People with heart conditions should avoid rapid ascents.
Tell your guide what to do in an emergency and where the nearest clinic is. This is general information, so rely on your own doctor's advice.
Insider tip
Take a printed list of your medicines and doctor's contact.
Avoid this
Do not trek high without medical clearance if you have heart or lung disease.
Related questions
Can I fly with insulin?
Usually yes with documentation; check airline rules.
Should I avoid trekking?
Ask your doctor; low-altitude options exist.
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