•Humans can adapt to altitudes of 3-4 km and remain healthy indefinitely
•Acute mountain sickness- initial response to rapid ascent to high elevation
–Poor sleep; headaches; nausea; vomiting; apathetic; irritable; little appetite
•Chronic mountain sickness- develops in people who have lived at high elevation for years; lose adaptation to hypoxia
•Pulmonary Oedema
–Accumulation of fluids in the lungs interrupts transfer of oxygen from air to blood
•
–