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How to prevent acute mountain sickness?

When traveling at an altitude of higher than 3000m above sea level, 75% people will have mild symptoms of acute mountain sickness (AMS) or “soroche”. The symptom usually starts 12 to 24 hours after your arrival at high altitude and begins to decrease in severity around the third day.

Following are some tips to prevent AMS: 

1. Drink plenty of water. There might be dehydration caused by the higher rate of water vapor lost from the lungs at higher altitude, and symptom is similar to AMS. 

2. Avoid caffeine and alcohol, as these can increase the likelihood of dehydration.

3. Take good rest and relax yourself, especially on the first day.

4. Avoid catching cold before traveling to a high altitude place. 

5. Prepare an oxygen bag if you don’t feel well on the first day. 

6. Try to follow the "golden rule" - climb high, sleep low. When staying in a place over 3,000 meters above sea level, you can go as high as you want, but try to sleep at a place no more than 300 meter higher than your previous night's sleeping elevation. 

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