Adam Taylor

Cabin pressure changes, reduced oxygen levels and low humidity during flights place added strain on the heart, lungs and circulatory system, posing risks for passengers with cardiopulmonary conditions. Dehydration, increased blood thickness and gas expansion in the gastrointestinal tract contribute to common in‑flight issues such as fainting, motion sickness and gastrointestinal discomfort. Cardiac events remain the leading cause of in‑flight deaths due to limited onboard medical resources. Passengers are advised to hydrate, limit alcohol, move regularly and manage medications to reduce health risks while flying.