DID YOU KNOW?
The earliest record of altitude sickness is from a Chinese text written in 30 BCE, describing an illness called "Big Headache Mountain." [2] Even thousands of years later, it remains a real danger for hikers, climbers, and travelers venturing above 8,000 feet.
STAY INFORMED
- Altitude sickness is a potentially dangerous and sometimes life-threatening condition caused by reduced oxygen levels at high elevations.
- It generally occurs at elevations above 8,000 feet, and symptoms can range from mild discomfort to serious complications like high-altitude pulmonary or cerebral edema. [1]
- You may be at higher risk if you have a lung or heart condition, or if you ascend rapidly without time to acclimate. [1]
- Common symptoms include headache, nausea, fatigue, dizziness, and shortness of breath — which can escalate if untreated.
HELPFUL TIPS
1. Ascend Gradually
- The best way to prevent altitude sickness is to give your body time to adjust. Avoid gaining more than 1,000 feet per day once you're above 8,000 feet. [1]
2. Plan Ahead if You Live at Low Elevation
- If you're traveling from sea level, consider spending a day or two at moderate altitude before going higher to allow time for acclimatization. [1]
3. Ask Your Doctor About Preventive Medication
- Medications like acetazolamide may be prescribed to help prevent or lessen symptoms of altitude sickness. [1]
4. Stay Hydrated
- Drink 3–4 quarts of water daily while at high elevation. Avoid alcohol and caffeine, which can contribute to dehydration. [1]
ALTITUDE SAFETY REMINDER
Altitude sickness doesn’t just affect mountain climbers — it can impact anyone traveling to high elevations. Listen to your body, ascend slowly, and prepare ahead of time. The views from the top are better when you’re healthy enough to enjoy them.