What are the odds of getting a blood clot on a plane?

Blood clots affect about 1-2 in 1,000 U.S. adults per year, and the risk may double or triple after a flight that's 4+ hours. One study estimates that 1 in 4,600 travelers will have a blood clot within 4 weeks of a long flight.



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Even if you travel a long distance, the risk of developing a blood clot is generally very small. Your level of risk depends on the duration of travel as well as whether you have any other risks for blood clots.

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After the flight If you have travelled by air you should be alert for the symptoms of DVT for up to one month after flying, and should seek medical help if any symptoms such as a swollen or painful leg, especially the calf, and/or breathing difficulties occur.

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Prevent Blood Clots During Travel
  1. Stand up or walk occasionally. ...
  2. Exercise your calf muscles and stretch your legs while you're sitting. ...
  3. Talk to your doctor about wearing compression stockings or taking medicine before departure if you have additional risk factors for blood clots.


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Research has shown that wearing compression socks during long-haul flights can significantly reduce the risk of developing blood clots and alleviate symptoms of leg fatigue and discomfort.

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The 16 Best and Worst Foods to Eat Before Flying
  • High Salt Snacks. Chips and other salty snacks are generally packed for long trips. ...
  • Fried Foods. Fried foods are also high fat foods, which tend to take longer to digest compared to others. ...
  • Beans. ...
  • Spicy Foods. ...
  • Garlic. ...
  • Cruciferous Veggies. ...
  • Coffee. ...
  • Carbonated Drinks.


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Talk to your doctor about wearing compression stockings or taking medicine before departure if you have additional risk factors for blood clots. Taking aspirin to prevent blood clots when traveling is not recommended. If you take aspirin for other reasons, check with your doctor.

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