By Dr. Ron Johnson, Chief Medical Officer at Satori World Medical

Sitting for an extended period of time on a fight can cause leg cramps, swelling, and sore joints. However, the most serious concern is a condition called deep vein thrombosis (DVT), where blood clots form in the leg. DVT risk is increased with air travel due to the confined seating, prolonged leg immobility and low cabin pressure. Symptoms of DVT include pain, swelling and discoloration of the leg and dilation of the surface veins. Although the risk of developing deep vein thrombosis is rare, below are a few preventative measures:

1.       Avoid heavy medication and sleeping aids. They can cause long periods of inactivity and can contribute to blood clot formation.

2.       Drink plenty of water. Planes have very dry air which can cause dehydration, muscle aches, and thickening of blood. Drinking beverages with electrolyte-fortified solutions, such as Gatorade or a similar sports drink, can increase fluid retention and keep you better hydrated than ordinary juice or water.

3.       Avoid alcohol and caffeinated beverages. These beverages can contribute to dehydration.

4.       Take frequent breaks to stretch your legs and arms. Try to walk around the cabin of the aircraft every hour if possible to increase blood circulation. When seated, avoid crossing your legs for a prolonged period of time.

5.       Purchase flight stockings. Research has shown that compression stockings or flight hose can increase circulation and lower the risk of deep vein thrombosis when worn correctly. They can be bought at most pharmacies and are also available at the airport.

6.       Wear loose-fitting, unrestricting clothing. Tight fitting garments can restrict blood flow through the body.

The next health tip will cover simple in-flight exercises that can help keep your blood flowing during long flights.