“There are various symptoms, including dizziness, lightheadedness, fatigue, drowsiness, weakness, nausea, unsteady gait, and a headache. Sounds familiar, right? Yeah, the symptoms of altitude sickness are a lot like the effects of alcohol intoxication.
So, while the altitude isn’t actually causing your BAC to go any higher, you may feel more drunk and sick because you are getting hit by two separate things at once. Dizzy + dizzy = more dizzy. Because there is no way to predict who will and won’t be affected by altitude sickness, this helps explain why drinking at high elevation is fine for some and horrible for others.”