Dr Libby Weaver Urges 10-20% Cabin Humidity Countermeasures on Long-Haul Flights

1 articles · Updated · New Zealand Herald · May 30

Cabin humidity can fall to 10-20% on long-haul flights, Dr Libby Weaver said, arguing that dehydration, slight drops in blood oxygen and disrupted digestion and sleep drive the foggy, bloated feeling many travelers report.
Her main advice is to reduce strain on the body: eat only when hungry, avoid treating in-flight meals as time-fillers, and, on evening departures, eat before boarding, then stick to water and rest.
Hydration sits at the center of her routine, with water as the main drink, little or no alcohol and coffee, and high-water foods such as soups and stews to avoid mistaking thirst for hunger.
After landing, Weaver recommends daylight exposure and a walk to reset circadian rhythm, then staying awake until a reasonable local bedtime to shorten jet lag.
She also advises researching nearby healthy food options before arrival; around one in five travelers report cold symptoms after flying, she said, making nutrient intake a priority.

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