Those travelling on four hour plus flights are more at risk of deep vien thrombosis say researchers at the Royal Liverpool University Hospital. Sitting still in one position for a long time increases the risk of blood clots forming which may break up, travel through the body and cause stokes.
Travellers are advised to get up and move around regularly, restrict alcohol intake and to wear well fitting medical stockings. They are also advised NOT to take sleeping tablets which may cause you to sleep in an akward postion for a long period thus educing blood circulation.
Dr Beverly Hunt of Lifeblood: The Thrombosis Charity says, " In the unlikely event that in the weeks following your flight you develop symptoms such as pain and swelling in either of your legs, or unexpected shortness of breath or chest pain, seek medical advice immediately."