New research has revealed that blood oxygen levels drop significantly not only in long-haul flight but also in short-haul shuttle flights. Speaking at the European Respiratory Society 12th Annual Congress, Dr Joao Carlos Winck said that his results showed that blood oxygen levels drop by roughly 10% on long-haul flights and 3% on short-haul trips. While such drops such not present any problems for healthy passengers, the findings suggest that both long and short-haul flights could be dangerous for people suffering from respiratory diseases.
SOURCE/REFERENCE: Reported by www.reutershealth.com on the 18th September 2002