As the warm summer months arrive and many of us prepare for well-deserved vacations involving long flights, it’s essential to prioritize our health. As a vascular surgeon dedicated to vein and artery care, I appreciate the opportunity to share my expertise on preventing deep vein thrombosis (DVT) during air travel. Often called “traveler’s thrombosis,” DVT remains a preventable risk that can cast a shadow over your summer adventures.
DVT is a condition where blood clots form in the deep veins, typically in the legs. Prolonged immobility during flights promotes blood stasis, while the dry cabin air and lower pressure contribute to dehydration and thicker blood. In summer, increased travel to beaches and resorts, combined with higher temperatures and potential alcohol consumption, heightens dehydration risks and thus clotting potential. Those with additional risk factors — such as being over age 40, obesity, recent surgery, pregnancy, smoking, or a history of blood clots —should be particularly cautious.
Prevention starts with simple actions anyone can take. Movement is one of the most important. Stand up and walk the aisle every one to two hours, if possible, and consider requesting an aisle seat to make this easier. While seated, engage in calf muscle exercises: perform foot pumps by raising your toes then heels repeatedly, draw circles with your ankles or lift each knee toward your chest. These small movements help keep blood flowing, even when you can’t leave your seat.
Staying well hydrated is equally important. Drink plenty of water throughout your journey, and limit alcohol and caffeinated beverages, which can accelerate dehydration. Wear loose, comfortable clothing and avoid crossing your legs for long periods.
A highly effective tool is graduated compression stockings. These specially designed socks provide 15 to 30 millimeters of mercury of pressure at the ankle and help prevent blood from pooling in the legs. They are widely available at pharmacies and online and should be worn during the flight, especially on longer trips.
If you have higher risk factors, consult your doctor before traveling. Depending on your personal health history, they may recommend additional preventive measures, such as low‑dose aspirin or other medications.
It’s also important to recognize warning signs. Symptoms of DVT can include leg pain, swelling, redness or warmth. If a clot travels to the lungs — a condition known as pulmonary embolism — symptoms such as sudden shortness of breath or chest pain require immediate medical attention.
By following these evidence-based strategies, you can reduce your risk and enjoy your summer travels with greater peace of mind. Healthy circulation supports an active, vibrant lifestyle, and a few simple precautions can go a long way in keeping your trip memorable for all the right reasons.
Here’s to safe, healthy and happy travels this summer.
Sammy Eghbalieh, M.D., is a vascular surgeon at Providence Saint John’s Health Center. To learn more, visit https://www.providence.org/locations/socal/saint-johns-health-center/heart-center or call 310-829-8618.
