Why do I feel more drunk on a plane?

“Whether or not you're in an airplane, alcohol can disrupt the absorption of oxygen in the bloodstream. Therefore, being at a higher altitude, coupled with this effect on your blood oxygen, may make you feel more tipsy—think dizzy, light headed, or even nauseous.”



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This is a very widely held urban myth. Residents of Denver, Colorado (1600m), will tell you that one drink in Denver is the same as two in Chicago (179m). However, the research is against it. Numerous studies have shown that altitude has no effect on your blood alcohol concentration (BAC).

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No drinking within 8 hours of flight Pilots may not use alcohol “while on-duty or within 8 hours of performing flight crew member duties.” The regulations also require that crew members submit to blood alcohol tests when requested by law enforcement officials authorized to ask for those tests.

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The science behind high altitude drinking is clear: You won't get more drunk unless you're very, very high up. The Federal Aviation Administration (FAA), did a study in the 1970s that measured the cognitive ability of people at 12,500 feet—more than 30 percent higher than the effective air pressure in a plane cabin.

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To be safe, wait 48 hours after you ascend to a higher elevation to drink, and avoid opioids (OxyContin, Vicodin) and benzodiazepines (Xanax, Klonopin) as these can cause respiratory depression. Two days is normally enough time for your body to acclimate to the altitude.

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Federal Aviation Regulation § 91.17 bars a pilot from flying: Within 8 hours of having consumed alcohol; While under the influence of alcohol; While using any drug that adversely affects safety; and.

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The FAA alcohol rule states that a pilot and any crew member may not consume alcohol within 8 hours of flying and may never have a BAC exceeding . 04 percent when reporting for duty and while operating a plane.

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The problem: Dehydration can compound drunkenness and feelings of altitude. It also makes for a worse hangover. In general, alcoholic drinks also slightly depress breathing. At altitude (like on a plane), that lowers your blood oxygen level, which can bring on a headache or dizziness, says Dr.

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