Acute mountain sickness is an sickness that can affect mountain climbers, hikers, skiers, or travelers who climb too fast.

Acute mountain sickness is actually more common in fit young men because they are more likely to attempt a rapid ascent by racing up the mountain like some indestructible super hero. It usually occurs when people rapidly reach a high altitude. Acute mountain sickness occurs from the combination of reduced air pressure and a lower concentration of oxygen at high altitude. Symptoms can range from mild to life threatening, and can affects the nervous system, lungs, muscles, and heart. This usually occurs in individuals exposed to an altitude over 7,000 feet who have not had a chance to acclimate to the altitude before engaging in physical activities. Mountain climbers, trekkers, skiers, and travelers to the Andes or Himalayas are at greatest risk. While individual tolerance varies, symptoms usually appear in several hours, with those in poor physical condition being most susceptible.

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