Flying has become an integral part of our lives, allowing us to travel long distances in a matter of hours. However, spending hours inside a pressurized cabin at thousands of feet above ground level can have various effects on our bodies.

From changes in blood circulation to increased dehydration, let’s explore what happens to your body during a flight.

1. Changes in Air Pressure

One of the most noticeable effects of flying is the change in air pressure. As the aircraft ascends, the pressure decreases.

This reduction in pressure can cause discomfort in the ears, leading to the need to equalize the pressure by swallowing, yawning, or using special earplugs. Additionally, this change in pressure can also cause trapped gas in our bodies to expand, leading to bloating or even stomach pain.

2. Dehydration

Flying exposes our bodies to extremely dry air, with humidity levels much lower than what we are accustomed to on land. This dry environment can lead to dehydration, as the air in the cabin pulls moisture from our skin and respiratory system.

It is essential to drink plenty of fluids during a flight to counteract this effect and avoid symptoms such as dry mouth, chapped lips, and fatigue.

3. Swelling and Edema

The reduced cabin pressure can also cause fluid to accumulate in our lower extremities, leading to swelling in our feet and ankles.

This condition, known as edema, occurs as a result of blood pooling due to reduced circulation and increased fluid build-up. Frequent movement and ankle exercises during a flight can help stimulate blood flow and minimize swelling.

4. Circulatory Changes

Extended periods of sitting during a flight can have an impact on our circulatory system. Prolonged inactivity can cause blood to pool in our legs and increase the risk of developing deep vein thrombosis (DVT).

DVT is a condition where a blood clot forms in a deep vein, usually in the legs. To reduce the risk, it is recommended to stretch and move around the cabin whenever possible.

5. Fatigue and Jet Lag

Frequent flyers are all too familiar with the concept of jet lag. Crossing different time zones can disrupt our body’s natural circadian rhythm, which is responsible for regulating our sleep-wake cycle.

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This disruption can result in fatigue, difficulty sleeping, irritability, and difficulty concentrating. It usually takes a few days for our bodies to adjust to the new time zone and recover from jet lag.

6. Changes in Oxygen Levels

Although airplane cabins are pressurized to simulate conditions at lower altitudes, the amount of oxygen in the air is still lower than what we are accustomed to on the ground.

This drop in oxygen levels can lead to decreased blood oxygen saturation, especially for individuals with respiratory conditions. It is advisable for those with pre-existing respiratory problems to consult their healthcare provider before flying.

7. Changes in Taste and Smell

Have you ever noticed that food and drinks taste different during a flight? The low humidity in the aircraft cabin not only affects our skin but can also impact our taste perception.

The combination of dry air and reduced sensitivity of our taste buds due to low air pressure can diminish our ability to taste and smell flavors effectively.

8. Impact on the Ears

Aside from the discomfort caused by pressure changes during ascent and descent, flying can also affect our ears in other ways. The background noise inside the cabin can make it difficult for us to hear conversations or announcements.

Additionally, cabin pressure changes can even affect our balance, causing temporary dizziness or disorientation.

9. Dry Eyes

The dry air in the cabin can also lead to dry eyes, especially for those who already suffer from the condition. Lack of moisture in the air can cause irritation, redness, and a feeling of grittiness.

Using lubricating eye drops during the flight can help alleviate these symptoms and keep your eyes comfortable.

10. Impact on the Skin

Flying can take a toll on our skin, leaving it dry, dull, and more susceptible to breakouts. The low humidity in the cabin can strip the skin of its natural oils, making it dry and dehydrated.

Additionally, the recycled air in the cabin can also expose our skin to pollutants and bacteria. To combat these effects, it is recommended to moisturize regularly, drink plenty of water, and cleanse your face before and after a flight.