Am I exposed to radiation when I fly?

We are exposed to low levels of radiation when we fly. You would be exposed to about 0.035 mSv (3.5 mrem) of cosmic radiation if you were to fly within the United States from the east coast to the west coast. This amount of radiation is less than the amount of radiation we receive from one chest x-ray.



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The amount of radiation is minuscule, and jet lag can usually be overcome in a few days. But for anyone flying dozens of times per year — say, at least two cross-country flights per month — these stresses start to add up, putting frequent fliers in higher risk categories for cancers and other chronic health issues.

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The cramped conditions and long periods of being less active on a flight can cause pain, stiffness or swelling of your legs. Being less active can lead to slow blood flow in your veins which increases your risk of developing a blood clot, known as deep vein thrombosis (DVT).

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Jet belly: (noun) the bloated state in which your stomach inflates post-flight. Also, a very unpleasant feeling. May also make you look like you're 3 months pregnant. So how does one prevent this jet belly? Well, it all depends on what you eat on the plane.

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On the Earth's surface, we are relatively shielded from this “galactic radiation” by the atmosphere. However, during high-altitude commercial flights, people are at risk of increased exposure to primary and secondary galactic ionizing radiation and to solar ionizing radiation (see Box 1).

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Whether it's a flight attendant or a dermatologist, experts agree that travelers should wear sunscreen on flights. In fact, the UV rays on planes are even more intense than when you're back on land. That's because you're even closer to the ozone layer, The Points Guy reported.

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Low air pressure during air travel also decreases the amount of oxygen in the air. This effect is modest and generally not noticeable for healthy travelers. For patients with significant lung disease, a small decrease in available oxygen can cause significant symptoms, especially with exercise.

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Wear loose clothing and bring a neck pillow, eye mask and noise-canceling headphones. I prefer in-ear headphones. Your risk of developing deep vein thrombosis is significantly higher on long-haul flights. Not moving for more than 10 hours can cause a deadly blood clot.

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Airplanes can be breeding grounds for bacteria and viruses, from cramped conditions to the low humidity that characterizes the air circulating on board. Low humidity can dry out your nasal passages and irritate your throat.

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While many love the experience of travelling by flight, it can be a nightmare for others who often complain of experiencing jet lag, nausea, memory loss, or brain fog post their journey. Some studies show that even relatively mild levels of hypoxia (deficiency in oxygen) can alter our ability to think clearly.

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So if you only fly on commercial airliners, you're in very safe hands. In the United States, there are 0.07 fatalities per billion passenger miles, which translates like this: If you fly 500 miles every day for a year, you have a fatality risk of one in 85,000. In short, flying is, by far, the safest mode of transit.

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Your chances of being involved in a fatal plane crash are incredibly small – around 1 in 11 million, according to Harvard researchers. While your odds of being in a plane accident are about 1 in 1.2 million, survivability rates are about 95.7% – so the odds are with you no matter how you look at it.

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It is safe to fly with high blood pressure if the medical condition is well controlled. However, if your hypertension is extremely high and unstable, it is best to avoid boarding a plane. A consultation with your doctor before flying is primordial to know if you are fit to fly.

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One of the biggest risks for people with heart disease who are flying is developing venous thrombosis. These risks are higher if you have CAD or an implanted heart device, such as an artificial heart valve or a coronary stent. 3 And if you have an arrhythmia, a blood clot in your heart can lead to a stroke.

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