Miles Levy, a consultant endocrinologist and professor of endocrinology at University Hospitals of Leicester, has offered reassurance regarding several health concerns associated with long-haul flights. He stated that while changing sleep routines can be disruptive, human bodies are resilient.
Levy also downplayed concerns about radiation exposure, noting it is a minor consideration primarily for very frequent flyers. However, he highlighted Deep Vein Thrombosis (DVT) as a health risk for travellers, particularly on flights exceeding four hours.
To mitigate the risk of DVT, Levy advised staying hydrated by drinking plenty of water, walking in the aisle, and performing calf exercises during long flights. He also recommended that individuals at high risk for DVT wear compression stockings and consult their GP.
Regarding the increased likelihood of getting sick after flights, Levy acknowledged that plane cabins, with many people in an enclosed space and air ventilation systems, can be a "perfect melting pot for viral infections."