How to Prevent from Altitude Sickness

Being a paradise to many tourists，Tibet has been the dreaming wonderland and attracted tourists all over the world．And now as tourism in Tibet enters the peak season，more and more visitors are longing to travel to the mysterious highland．Meanwhile，they are worried about the altitude sickness （高原反应） which is most likely to experience in Tibet．Experts advised that tourists to Tibet should have a scientific and better understanding of the disease．

Altitude sickness，also known as acute high altitude disease （AHAD），is a common physiological reaction caused by acute exposure to low oxygen content and air pressure and dry weather when people getting up to a place with a certain altitude．

Acute altitude reaction usually occurs within hours or days after a person goes up to a highland above 2，700meters above sea level from a region with a lower altitude．It is believed that most visitors to Tibet will be certain to suffer from at least some symptoms which will generally disappear through acclimatization in several hours to several days．It presents as a collection of nonspecific symptoms including headache，shortness of breath，oppressed feeling in the chest，lack of appetite，fever，dizziness，fatigue or weakness，etc．Some will even take the chance to come down with drowsiness，insomnia，adrenaline surge，nosebleed and so on．

However，experts point out that human bodies can adapt to the surroundings （适应环境） in a gradual way．Therefore，altitude sickness is not that scary．

To prevent the occurrence of altitude sickness，visitors should have a proper preparation in advance and avoid heavy physical activities before they go to Tibet．After getting off the plane，they should try not to carry heavy things，run or avoid outdoor activities as much as possible．

Nifedipinum，Nuodikang Capsule and Suoluomabao Capsule （胶囊），which is also known as Hongjingtian Capsule，may help some people prevent the occurrence