Which of these is NOT a known physiological side effect of climbing at high altitudes?

Question

Quizplus · Accepted Answer

Increased barometric pressure is not a known physiological side effect of climbing at high altitudes. In fact, barometric pressure decreases as altitude increases. The other choices are all known side effects of climbing at high altitudes: hypoxia due to the lower oxygen availability, increased red blood cell production as a way to adapt to lower oxygen levels, frostbite due to the cold temperatures, and physical and mental fatigue due to the strenuous activity and environmental stressors.

Which of These Is NOT a Known Physiological Side Effect